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QEX1982-1999年索引 [复制链接]

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index to qex issues 1 - 12
(all dates 1982 unless otherwise noted)

antennas and transmission lines

advice needed on dish construction (arnold): 6, oct
advice needed on dish construction (kane): 2, dec
drooping radial impedance info. (geist): 2, jul
metal-boom quagi (chladek): 3, oct
monopole with drooping radials (belrose): 10, sep

computers

algorithmic state machine for remote receiver link system controller
(smitt): 2, feb
amateur experimenter's net (gervenack): 2, jun
amicon teleconference (amsat): 10, jun
avoid peeks and pokes like the plague (holtz): 2, aug
bit-oriented vs. bisync protocols (gehrke): 2, oct
communications software (hayes): 10, jun
computer rtty in basic (meier): 5, jun
computer simulation of a half-wave filter (imamura): 9, feb
computer simulation of a half-wave filter errata: 2, jan `83
data and clock modem dcm-1 (newland): 3, may

data communications (borden)

applications for a host computer: 12, sep
applications for a host computer: 9, jan `83
hf networking: 8, oct
hf networking: 12, nov
introduction, vancouver tnc: 9, dec `81
line interface program: 8, feb
line interface program: 18, apr
line interface program: 9, jun
terminal interface program: 8, jul

data communications - a user's handbook: 8, apr
data communications chip workshop (intel): 10, dec `81
error detection basics (feinstein): 7, oct
modifying the vadcg tnc to use 2716 eproms (anderson): 8, jan `83
packet radio terminal node controllers: 12, dec `81
packet radio tests via amsat oscar-8: 2, oct
packet switching: tomorrow's communications today (rosner): 10, dec `81
pidgin (herrold): 4, jul
protocols for packet switching course (gwu): 10, dec `81
quest for ibm pc rtty (janco): 5, sep
quest for sitor/amtor program for apple ii (adams): 2, aug
rtty art storage by computer (gadbois): 6, sep
rtty send program & interface for the sinclair/timex zx81 (davis): 3, dec
southeast computer group net: 5, feb
trs-80 k1 relay (gervenack): 8, jun
trs-80 modem i for radio communications (gervenack): 14, nov

editorials

agreement on packet radio standards (magnuski): 1, nov
arrl technical advisors (rinaldo): 1, jul
call for articles (rinaldo): 1, feb
computers and amateur radio (rinaldo): 1, aug
experimental radio services (rinaldo): 1, jun
fcc approves additional digital codes (rinaldo): 1, oct
introduction to premiere issue (rinaldo): 1, dec `81
microphone and power connector standards (rinaldo): 1, sep
pacsat -- a new amsat satellite project (connors, clark): 2, nov
qex is going monthly; feedback (rinaldo): 1, may
second arrl packet conference call for papers: 1, jan `83
special temporary authority (rinaldo): 1, jun
some thoughts on radio-frequency interference (rinaldo ): 1, dec
technical presentations at meetings (rinaldo): 1, may
teleconference radio net: 1, jan `83

keying and control circuits

chirpless oscillator keying (mehner): 2, oct
two experimental keyers (baur): 7, aug

miscellaneous

amsat search for candidates: 5, sep
amsat video tape library: 10, jun
calibrating frequency counters (medler): 2, may
calibrating a frequency counter, a method of (wise): 2, may
more on calibrating a frequency counter (stein): 2, jun
on calibrating a freguency counter (taylor): 2, jul
more on calibration (greene): 2, jul
calibration on color burst reference (leggette): 2, jul
more on calibrating frequency counters (brodsky): 2, aug
chirpless oscillator keying (mehner): 2, oct

circuits (heil)

multi-purpose preamplifier: 11, dec `81
solid-state switching: 11, dec `81

coil design in basic (rosier): 5, jul
coil design program, on the (rosier): 5, sep
connector standards (lahtinen): 13, nov
connector standards (lund): 14, nov
digital voice modulation (horn): 5, jan `83
encyclopedia of integrated circuits: 5, feb
epson printer newsletter: 5, feb
problem with epson users newsletter (gay): 2, jan `83
errors in swr indicators (weller): 2, jun
fcc tutorial video tapes: 15, feb
great-circle bearing and distance to each state (meier): 5, oct
help finding parts and with debugging circuits (spanbauer): 2, oct
how to design wide-band rf quadrature network (horn): 5, nov
how to design wide-band rf quadrature network references: 2, dec
ieee computer society tutorials: 5, feb
ieee course via satellite tv broadcast: 10, dec `81
long island technical talks: 10, dec `81
nicads for the azden pcs-2000 (pettengill): 9, dec
pc board standard can speed experiments (grabowski): 9, may
pi-network and coil design made easy with the trs-80 pocket computer
(houghton): 7, may
pi-network formulas (wingfield): 2, sep
pi-network formulas (maki): 14, nov
pi-network formulas (logan): 2, dec
power-fet technology (demaw): 6, oct
preamp in a pipe (mcdonald): 11, nov
qrp mailbox: 6, oct
real-time satellite tracking on a programmable calculator (welch): 4, nov
receiver measurement validation (johnson): 14, nov
reparing 9-volt nicd batteries (medler): 14, nov
rtty spectrum occupancy (medler): 2, jan `83
secondary time standard-clock a (true): 3, sep
secondary time standard-modifications to (true): 10 nov
3.579545! [secondary time standard-clock a] (bradford): 14, nov
ssb radio communications, on (belrose): 3, jul
tactile transducer for cw (riggen): 11, sep
theoretical void (bilow): 13, dec `81
tune into a load - for sure (hamilton): 2, jun
two experimental keyers (baur): 7, aug
using the xicor novram (johnson): 4, aug
1750-meter experiments (walker): 2, may
1750-meter transverter (faulkner): 3, aug

new products

clock-controlled active filter: 12, dec `81
commodore vic-20 rtty interface: 16, jun

components (forbes)

aeg-telefunken vhf front end: 11, may
anzac am-153 lna: 11, aug
anzac md-148 double-balanced mixer: 11, aug
anzac md-167 high i-f dbm: 11, aug
anzac fm-104 broadband frequency doubler: 11, aug
anzac jh-136 quadrature hybrid: 11, aug
avantek low-noise gaas fets: 11, jan `83
avantek microwave components: 15, nov
buckeye knobs and enclosures: 13, sep
cmos eproms: 11, jun
ecl voltage-controlled oscillators: 13, sep
fifth dimension relays and tilt switches: 9, oct
hamlin miniature solid-state relays: 15, nov
intersil cmos programmable regulators: 11, may
intersil icm7555 and icm7556 timers: 9, jul
intersil im6716 2k x 8 cmos uv eprom: 11, dec
intersil voltage-to-frequency converters. 9, jul
litton trackball system: 13, sep
motorola mc12071 high-speed prescaler: 17, apr
motorola mc1374 tv modulator: 11, jun
motorola mc145414 low-pass filter: 8, oct
national dot/bar display driver: 9, oct
national dt1050 digitalker: 17, apr
national lm369 10-a regulator: 14, feb
national lm1894 dnr: 11, jan `83
national lm2111 fm detector and limiter: 9, oct
national lp311 voltage comparator: 11, dec
national ma2016 16k x 8 static ram: 11, dec
national mm82pc12 i/o port: 11, aug
national mf-10 filter: 9, jul
national nsc800 microprocessor: 11, jun
ne572 compandor kit: 11, aug
panasonic paper-thin lithium batteries: 13, sep
piconics microwave choke: 15, nov
rca cd1805 cmos microcomputer: 9, oct
rca cd22859 dtmf generator: 11, may
seeq ethernet data-link controller: 11, jan `83
silicon systems ssi 201 dtmf decoder: 14, feb
sprague modem filters: 11, aug
standard microsystems com 2661 epci: 15, nov
standard microsystems crt9700: 11, jan `83
supertex dmos fet, vn10k: 11, jan `83
supertex n-channel dmos power fets: 11, dec
telemos cmos gate array: 15, nov
texas instruments tmsk101a and tmsk202: 17, apr
texas instruments tms99532 afsk modem: 9, oct
third domain video sync stripper: 11, dec
thomson-csf capacitor kit: 9 jul
thomson-csf rf & microwave transistors: 11, dec
ti vlsi/lsi telecommunications catalog: 13, sep
varian ctc to-220 rf transistor: 14, feb
xicor novram: 11, may
74hc hi8h-speed cmos logic: 11, jun

computer-controlled drill press: 12, dec `81
controller chip for epson matrix printers: 3, nov
dot-matrix lcd for pocket terminals: 12, dec `81
kepro electroless tin plating kit (forbes): 13, dec `81
monolithic filter for rs-232-c: 12, dec `81
power line noise detector: 12, dec `81
rs-232-c connector cutouts: 12, dec `81
switched-capacitor audio filters: 12, dec `81

receiving

improving sensitivity of collins 75s receivers (johnson): 2, may
pto substitute for the r-390a, a (hoehl): 6 apr
vhf and uhf low noise preampilfiers (krauss): 3, dec `81

satellites

agreement on packet radio standards (magnuski): 1, nov
amicon teleconference (amsat): 10, jun
pacsat -- a new amsat satellite project (connors, clark): 2, nov

specialized communications techniques

eme system survey (meter): 7, dec `81
rtty art storage by computer (gadbois): 6, sep
rtty send program & interface for the sinclair/timex zx81 (davis): 3, dec

transmitting

comments on wb2szk 50-mhz solid-state amplifier: 2, aug
multimode, fm-able vxo, a (doyle): 2, apr
50-mhz 100-watt output linear amp (bynum): 3, jun

vhf and microwaves

microwave alignment probe (chladek): 7, jan `83
vhf and uhf low noise preamplifiers (krause): 3, dec `81
vhf+ technology (krause): 10, dec
10-ghz signal sources (krause): 16, apr
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index to qex issues 13 - 24
(all dates 1983 unless otherwise noted)

antennas and transmission lines

antenna compendium (rinaldo): 2, oct
antenna compendium (rinaldo): 1, nov
the turnstile antenna and sts-9 (hall): 1, sep
the turnstile antenna and sts-9 (jansson): 3, nov
the turnstile antenna and sts-9 (davidoff): 2, dec

computers

an improvement for the zx80 microcomputer (margison): 2, aug
apple computer program transmits/receives teletype: 2, oct

bauds (sternberg): 11, feb
ber performance of tapr tnc modem (goode): 3, aug
calculator/computer program source (thompson): 6, nov
continuous rtty reception on the zx80 (heitner): 3, jul

data communications (borden): 9, jan

digital phase lock loops: 10, mar
std packet computing: 14, jul
the synchronous line analyzer: 9, apr-may

errata - computer simulation of a half-wave filter (imamura): 2, jan
experiences on building a uv prom eraser (simpson): 2, mar
feedback on vadcg tnc 2716 eprom modification (titus): 2, feb
hamtrm1.bas - a radio communications program (gervenack & bellinger): 2,
sep
lookup table for tncs (dillon): 2, dec
minimuf for the ham and the ibm personal computer (anderson): 7, nov
modifying the vadcg tnc to use 2716 eproms (anderson): 8, jan
novation d-cat modem for amateur radio (gervenack & faudree): 4, apr-may
packet radio program exchange (wingfield): 6, nov
packet radio and radio communication requirements (meinzer): 3, mar
packet radio requirements (magnuski): 2, apr-may
prom programmer/reader and utility software for 2708 and 2716 proms
(palmer): 3, feb
turn your trs-80 color computer into a complete cw morse code terminal: 11,
oct
update on the sinclair computers for rtty terminals (heitner): 2, jul
zx81 rtty receive program (davis): 6, mar
zx81 rtty receive program feedback (wolfgang): 2, jun

editorials

arrl radio amateur's handbook (rinaldo): 1, aug
call for packet-radio papers in new jersey; in sweden (rinaldo): 1, nov
handbook construction projects (rinaldo): 1, dec
ninth annual eastern vhf/uhf conference (rinaldo): l, apr-may
ninth annual eastern vhf/uhf conference (rinaldo): l, jun
packet radio conference proceedings (rinaldo): 1, jun
potential amicon ssc users (rinaldo): l, jun
qex and qst articles (rinaldo): 1, feb
qex and qst articles (rinaldo): 1, apr-may
qex and qst articles (rinaldo): 1, nov
qex and qst articles (rinaldo): 1, dec
second arrl packet conference (rinaldo): 1, jan
second arrl packet conference (rinaldo): 1, feb
second arrl packet conference (rinaldo): 1, mar
second arrl packet conference (rinaldo): 1, apr-may
six meters in australia (rinaldo): 1, nov
sts-9 schedule (rinaldo): 1, oct
w4ri and qex are moving to newington (rinaldo): 1, mar

miscellaneous

a 12/70-watt class c amplifier for 146 mhz (bynum): 3, oct
a 12/70-watt class c amplifier for 146 mhz (bynum): 6, nov
a note on pi-l networks (wingfield): 5, dec
abbreviations (mckenzie): 2, apr-may
amplitude compandored sideband vs. fm: 11, dec
bartg newsletter (thompson): 2, dec
diode voltmeters (weller): 3, apr-may
double dippers anyone? (rinaldo): 8, nov
fcc science and technology tutorials: 11, oct
fcc science and technology tutorials: 6, nov
fiberoptics in the shack (gilmer): 2, jun
freedom to listen (weinland): 2, apr-may
freedom to listen (weinland): 2, jun
globecom ྏ: 6, sep
ieee call for papers: 8, sep
index to qex issues 1 - 12: 1, jan
inductor stack revisited (wetherhold): 6, aug
low-cost solution (rinaldo): 2, oct
lowpass speech filter using surplus inductors (wetherhold): 10, jun
many modifications to the ten-tec omni (helms): 3, jun
modulation methods (clarke): 2, jun
more feature articles (henderson): 2, jun
problem with epson users newsletter (gay): 2, jan
soapbox (olsen): 9, sep
sources of silver solder (williams): 2, jun
teleconference radio net changes (whiting): 2, feb

new products

components (forbes):

avantek low-noise gaas fets: 11, jan
national cop420r/cop444lr: 11, mar
national ds8621 vhf/uhf prescaler: 11, mar
national lh0082 optical communication receiver/amplifier: 11, mar
national mm74hc942 300-baud modem: 11, mar
national semiconductor lm 1894 dnr: 11, jan
piggyback eprom microcontroller: 11, mar
seeq ethernet data-link controller: 11, jan
sprague tantalum chip capacitors: 11, mar
standard microsystems crt9700: 11, jan
supertex dmos fet, vn10k: 11, jan
telcone dtmf receiver family: 11, mar

five new, low cost portable dmm's available: 11, dec
new products from rak: 15, nov
rfi conductive coating: 4, dec

receiving

illegal multipoint distribution service/home box office (mds/hbo) receivers
(krause): 10, feb

satellites

amateur radio satellite symposium: 2, oct
amsat-oscar 10 is looking good (place): 1, aug
amsat-oscar 10 launch successful (place): 1, jul
amsat-oscar phase iiib launch (rinaldo): 5, jun
modifications to real time satellite tracking programs for hp-41c/cv
programmable calculator (welch): 2, jul

specialized communications techniques

amtor: n1bee replies to n2wx (bilow): 2, nov
an amtor protocol change? (bilow): 2, jul
bibliography on minimum-shift keying (connors): 4, mar
continuous rtty reception on the zx80 (heitner): 3, jul
digital voice modulation (horn): 5, jan
digital voice modulation (cole): 2, mar
equipment for cw-meteor scatter operation (noeding): 4, nov
"packet" meteor scatter communications (moore): 3, dec
reply to n1bee on amtor (goldstein): 2, aug
right on channel - a frequency standard for amateur hf rtty (newland): 5,
apr-may
rtty spectrum occupancy (medler): 2, jan
update on the sinclair computers for rtty terminals (heitner): 2, jul
zx81 rtty receive program (davis): 6, mar
zx81 rtty receive program feedback (wolfgang): 2, jun

transmitting

automatic qsp design needed (dyruff): 2, feb

vhf and microwaves

material for new arrl uhf-microwave book (hutchinson): 2, jun
microwave alignment probe (chladek): 7, jan
reprints of zs6axt microwave alignment probe references (compton &
noeding): 5, oct
reprints of zs6axt microwave alignment probe references references
(compton): 2, dec

vhf+ technology (krause): 5, aug

24-ghz gunnplexers: the holiday gift for this year?: 10, dec
chip capacitors revisited: 8, apr-may
illegal multipoint distribution service/home box office (mds/hbo)
receivers: 10, feb
where goeth the bipolar rf power transistor?: 7, sep
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index to qex issues 25 - 36 (1984)
(all dates 1984 unless otherwise noted)

antennas and transmission iines

errata for series line matching sections for impedance matching (peck): 2,
mar
modification for the turnstile antenna (dvorsky): 4, may
rf transmission lines of the open wire type (welch): 2, feb 1985
thoughts on antenna design (francis): 4, aug

computers

a packet radio adapter for the ibm pc (botner): 3, jan 1985
a sinclair basic program for pi-l networks (knaack): 2, mar
an optional program change for the sinclair basic program for pi-l networks
(knaack): 2, may
circuit design/analysis software for the ibm-pc: 11, mar
coax-antenna trap program for the timex/sinclair 1000 (griffith): 8, aug
coax loss program for the hp-97 and trs-80c (mcnally): 8, jul
comments on the heathkit et-3400 (suarez): 2, sep
communications software for the trs-80 model 100 (rinaldo): 1, apr
complete rtty for the timex (strohl): 3, sep
correction for the cable attenuation program (lunder): 2, sep
feedback on the gb3us mk2 (whitaker): 2, aug
interface circuit (ascani): 2, feb 1985
l-network program for the timex (knaack): 2, dec
log program for the apple iie (terest): 2, jun
magazine bibliography rbbs-pc: 12, sep
modifications for the heathkit et-3400a microprocessor trainer (varner): 3,
jun
more on the osborne computer and rtty (plant): 2, jun
notes on the ibm minimuf program (bursell): 2, may
programs for the hp-85 computer (burford): 2, apr
remote terminal for your micro (davis): l0, oct
sinclair computers as low-cost data terminals for amateur radio (heitner):
5, mar
the gb3us mk2: a microprocessor repeater logic system, part i (whitaker):
8, may
the gb3us mk2: a microprocessor repeater logic system, part ii: 5 jun
the osborne computer and rtty (corley): 2, apr
tips for using ribbon cable (weller): 12, sep

editorials

airborne packet repeater (rinaldo): 1, jul
are there columnists out there? (rinaldo): 1, jun
arrl ad hoc committee on amateur radio digital communication (rinaldo): 1,
sep
arrl board actions support packet radio (rinaldo): 1, nov
british amateur radio teleprinter group (rinaldo): 1, jan 1985
call for articles: 1, mar
call for articles: 1, sep
call for papers and other session proposals: 9, nov
cellular (amateur) radio (rinaldo): 1, nov
construction projects: 8, nov
digital committee completes work on packet protocol (rinaldo): 1, oct
fourth arrl amateur radio computer networking conference (rinaldo): 1, jan
1985
fourth arrl digital communications conference call for papers (rinaldo): 1,
nov
gateway - the arrl packet-radio newsletter (thompson): 11, sep
globecom ྐ ieee global telecommunications conference: 9, nov
goodbye to chirps: 1, mar
hamarama (rinaldo): 1, sep
international audio and video fair: 9, dec
local area networks are standardized: 13, sep
midway amateur radio club to assume management of the north american
teleconference radio net: 13 oct
omnicom features two seminars on networking standards: 13, sep
packets in the southeast (rinaldo): 1, oct
packet radio gathers forces (rinaldo): 1, jun
packet-radio repeaters: 1, mar
project companion (rinaldo): 1, aug
quite a weekend in los angeles (rinaldo): 1, dec
switched-capacitor filter technology (thompson): 2, dec
tenth annual eastern vhf/uhf conference: 10, apr
the power sources conference: 9, nov
third packet conference (rinaldo): 1, may
word processing dictionary ideas: l, mar

educational

motorola technical literature catalog: 10, apr
tutorial update (thompson): 3, mar
tutorial update (thompson): 3, aug

miscellaneous

a new circuit for the 1960 vw bug revisited (neidig): 3, apr
a practical digital control unit for the icom 720a (young): 5, apr
a time-stretcher for the handicapped (wilson): 2, may
a wide-band instrument amplifier (bowman): 4, apr
amateur radio possibilities with cellular radio (talley): 2, jan 1985
an experimental two-meter converter with galliumarsenide transistors
(bowman): 8, nov
another source for help: 2, jan. 1955
audible swr indicator (mayer): 3, feb 1985
dual-gate mixer for the sony icf 2002 (towle): 6, may
id timer with tone and display (varner): 7, jul
ideas for a wireless mic/headset (alline): 2, sep
in search of a definition for the use of fiber optics (gibson): 2, apr
in search of quartz crystals (bruning): 2, sep
reeping cool (kulhlmann): 2, oct
land mobile communications engineering review (nagurney): 11, sep
liquid crystal displays: an established example of molecular electronics,
part i (shanks): 3, oct
liquid crystal displays: an established example of molecular electronics,
part ii: 3, nov
low-impedance microphones (ballieu): 2, feb 1985
qex 1984 index: 12, feb 1985
reducing the speed of internal cooling units (jansson): 3, may
solution for the 1960 vw bug (shepard): 3, mar
symbols of the resistor color code (biggs): 3, apr
the continuing battle on interference (buttschardt): 2, dec
the handbook of bar coding systems: 12, jan 1985
theory, limitations and adjustment of reflectometers and other swr meters
(weller): 3, dec
theory, limitations and adjustment of reflectometers and other swr meters
feedback: 2, jan 1985
theory, limitations and adjustment of reflectometers and other swr meters
feedback: 2, feb 1985
twinkle twinkle little star (fcc): 10, nov
wind and solar maps needed (belrose): 1, apr

new products

acrian 05010-50 transistor (krauss): 9, mar
bv engineering: electronic circuit analysis program: 12, jul
bv engineering: scientific graph printing program: 13, jul
bv engineering: signal processing program: 12, jul
comments on the sony 2002 receiver (gobrick): 3, apr
contest contact simulation (rinaldo): 1, oct
microcomputer software for & dentists and engineers: 11, nov
motorola announces dtmf dialer and speech network chip: 10, mar
new hf antenna design program for the trs-80c color computer and mc-10: 12,
sep
new power amplifier: 3, aug
new products from motorola: 11, apr
six-bit video digitizer integrates quality pictures and the ibm pc: 12, jan
1985
the motorola mc3361p: 9, jun
the raster memory system (rms) graphics chip set: 11, apr
ti announces new gaas fet (thompson/wilson): 9, dec
trw mra 1215-55h power transistor (krauss): 9, mar

receiving

144/220-mhz bandpass filter (drexler): 7, mar

satellites

oscar 10 packet-radio teleport experiments (rinaldo): 1, apr

specialized communications techniques

a solution to the poll/final problem (karn): 16, jul
acssb packages available from arrl hq (rinaldo): 1, jan 1985
amplitude compandored single sideband contacts (rinaldo): 1, sep
amtor in australia (molen): 9, apr
daughter board for vancouver tnc (fox): 1, jul
fcc grants spread spectrum sta (rinaldo): 1, jul
fcc proposes part 15 and 90 spread spectrum (rinaldo): 1, jul
lasers and amateur radio (thompson): 5, jan 1985
meteor scatter (rinaldo): 1, aug
proposal for a 50-mhz beacon system to assist propagation studies (wright):
2, mar
rocky mountain packet amateur radio association (rinaldo): 1, jul
routine packet-radio meteor burst coutacts on six meters (carpenter): 9,
oct
rule changes for the experimental radio services (fcc): 6, mar
rule proposals for the authorization of spread spectrum and other wideband
emissions (fcc): 2, jul
satellite signal source for 2304 mhz (wilson): 8, feb 1985
second spread-spectrum sta (rinaldo): 1, jun

transmitting

144/220-mhz bandpass filter (drexler): 7, mar

vhf and microwaves

a 2-meter preamplifier using the ti s3030 dual gate gaas fet (britain): 8,
dec
direction finding and vhf propagation (suarez):2, apr

vhf+ technology (krauss)

new vhf records: 10, aug
on attaining high-frequency stability: 10, dec
update on the 432- and 1296-mhz converter kits: 10, aug
we don't speak the same language: 9, mar
432- and 1296-mhz receiving converter kits: 9, mar
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index to qex issues 37 - 48 (1985)
(all dates 1985 unless otherwise noted)

antennas and transmission lines

a method for achieving high isolation between antenna arrays (conwell): 8,
jul
broadband antennas employing coaxial transmission line sections (conwell):
8, apr
the asymmetrical folded half-dipole and linear extension antenna array
(conwell): 7, mar
wire transmission lines revisited (welch & sypher): 2, aug

computers

a repeater operating program in basic (sundstrom); 3, apr
basic maidenhead (fleagle): 3, may
bulletin board program for the c 64: 11, apr
computerized smith chart for noise bridge applications (white): 7, sep
cynwyn offers two new programs for the radio shack computer (thompson): 10,
feb 1986
improvements to the ti php-2500, epson rx-80 or other similar printers
(davis): 3, jul
new subroutine for the ibm minimuf program (stannard): 3, nov
packet radio adapter for ibm pc software available (botner): 2, jun
rtty and cw with the portable 100 (graue): 6, nov
tapr tnc modification for 12 v use (ball): 6, jun
tapr tnc modification for 12 v use feedback: 2, aug
ti 99/4a contest dupe program (arbogast): 3, mar
ti-99/4a keyboard conversion for the ts-1000 computer (grabowski): 3, feb
1986
timex-1000 program for series line matching sections for impedance matching
(knaack): 2, jul;
timex-1000 program for series line matching sections for impedance matching
correction (knaack): 2, oct

editorials

acssb boards (rinaldo): 1, apr
are you into sm? (rinaldo): 1 mar
arrl amateur radio computer networking conferences 1-4 (rinaldo): 1, dec
arrl digital committee get-together (rinaldo): jan 1986
arrl spread spectrum committee (rinaldo): 1, sep
assistant technical coordinators (rinaldo): 1, aug
call for articles: 1 may
call for articles: 1, sep
call for digital communications papers: 1, oct
call for technical articles: 1, nov
eleventh annual eastern vhf/uhf conference (rinaldo): 1, mar
experience with computer-aided drafting? (rinaldo): 1, dec
fourth packet-radio conference a hit (rinaldo): 1, apr
ieee international conference on communications 1985 (thompson): 9, may
ieee vehicular technology conference: 2, jan 1986
new tools for the arrl technical department (hutchinson): 1, jul
new vhf conference format at dayton (stilt): 14, mar
nice plug for amateur packet radio (rinaldo): 1, sep
north american teleconference radio net (rinaldo): 1, dec
packeteers to meet in gaas valley (rinaldo): 1, mar
pprs "golden packet" award (rinaldo): 1, apr
rf technology expo 1986 (thompson): 13, dec
rudak lives (rinaldo): 1, nov
vehicular electronics conference to be held in boulder, colorado
(thompson): 15, mar
vhf communications returns to america (thompson): 2, jan 1986
west coast vhf-uhf conference (rinaldo): 1, apr
west coast vhf-uhf conference (lusis): 1, jun
1986 handbook (rinaldo): 1, dec

miscellaneous

a high performance dtmf decoder simplifies control of remote base stations
(grabowski): 3, oct
a method of frequency control for the converted hygain board (donaldson):
3, sep
a method of frequency control for the converted hygain board feedback on
logic reference (fabishak): 2, dec
a square-wave generator with a useful range from 47 khz to 52 mhz (bowman):
11, dec
a variable-frequency oscillator for communication equipment (bowman): 6,
aug
alphabet soup (britain): 2, may
amateur radio and emp (leggett): 2, sep
amateurs gain 902-928 mhz; lose 420-430 mhz north of line a: 9, oct
another look at power sharing between two transformers (amon): 2, jun
book review (thompson): 7, jun
collins kwm-2 1750-hz offset problem: 10, mar
composition resistor gains wide recognition (lund, smith, & weller): 2, nov
composition resistors - a dying breed? (andrus): 2, oct
composition resistors - trimmed and otherwise (weller): 9, jul
convert ba screws to american sizes (nagurney): 8, aug
current equalizing in paralleled transformers (geiger): 2, jul
emp and the amateur (cooper): 4, nov
info wanted on building a cw keyer (bogash): 9, feb 1986
interested in emp? (leggett): 2, jan 1986
more on load sharing (weller): 2, sep
newsletter gets new editor (thompson): 5, jan 1986
power supply schematic (hofer): 10, mar
product review index: 1976 to 1984: 4, mar
qex: 1985 index (thompson): 7, feb 1986
testing audio-frequency phase quadrature: is your circle truly a circle?
(horn): 5, may
the japanese 2s system (britain): 2, oct
transformer secondaries -- another solution (shepard): 10, mar
voltage-controlled capacitor linearization (allen): 3, aug
wanted: a source for low-cost reliable pager system (rawson): 2, dec

new products

asm - book and software catalog (american society for metals): 10, feb 1986
cericor's future in hp's hands: 11, feb 1986
custom plotter charts (thompson): 11, jan 1986
defend your computer and sensitive electronic equipment against power line
failures (thompson): 11, jan 1986
designer's toroid kit (thompson): 10, feb 1986
dual color led indicator (thompson): 5, sep
epo-tek 353nd (thompson): 11, jan 1986
graphics programs for your apple (thompson): 14, mar
intel announces two new eproms (thompson): 11, jun
markwik permanent wire markers (thompson): 10, jan 1986
miniature manual line includes square pushbuttons and indicators (micro
switch): 11, feb 1986
new spectrophotometer has unmatched levels of precision and reliability
(hunterlabs): 10, feb 1986
ori expands line of cmos microcomputer chips with advanced version of 80c51
8-bit mcu (thompson): 13, aug
philips ecg high technology chemical line (thompson): 11, apr
sunrise sunset for the apple iie (thompson): 9, oct
the et-1 error rate test set (thompson): 10, jan 1986
the liquid crystal shutter (mccormick): 11, jul
the tsc7650 -- a new cmos operational amplifier (thompson): 11, jun
update on the ti gaas fet s3030 (hutchinson): 2, jun
11537a - the voltage-controlled attenuator (thompson): 11, sep
54f/74f402 expandable cyclic generator/checker (thompson): 14, mar

receiving

diversity receiver systems (cornwell): 5, nov
dtmf receiver kit price decrease (teltone): 11, sep
head and earphones subject of new world standard (thompson): 11, apr
new publication on bilateral sensorineural deafness (thompson): 10, jun

satellites

call for papers (am5at): 10, jun
project oscar - acssb level 1 compandor: 8, jun
1.7 miles high and talking about space (rinaldo): 1, oct

specialized communications techniques

a report on acssb progress (jansson): 3, jun
acssb ic update -- audio board (bonaguide): 2, apr
acssb replacement parts available soon: 2, jul
amrad beacon given sta fcc approval (feinstein): 8, mar
another look at acssb (laroche & brosseau): 2, aug
assistance for acssb builders and groups (cooper): 2, oct
cheap moonbounce (wilson): 6, oct
comments on moonbounce (simpson): 2, feb 1986
comments on moonbounce mr. wilson's response (wilson): 2, feb 1986
fcc issues automatic control nprm (rinaldo): 1, may
frequency mobility for your acssb board (jansson): 2, mar
more on the acssb packages (jansson): 2, may
notes on telefax (smith): 3, dec
packet radio with the tono exl-5000e communications terminal (gregory): 2,
oct
putting the azden pcs 3000 on packet (roberts): 4, jun
report on ccw (buttschardt): 2, sep
report on the unattended use of the teleprinter code (newland): 8, mar
report on the unattended use of the teleprinter code amtor error (newland):
2, jun
spread spectrum day at the fcc (rinaldo): 1, may
spread spectrum day at the fcc: 1, jun
trunked si! cellular no! (wilson): 2, apr
update on acssb packages (thompson): 9, dec
what's happening with the acssb boards? (appel): 4, nov
writing pictures into the apple hires screen from a deskfax machine
(smith): 3, jan 1986

transmitting

circuit for a very stable crystal oscillator (true): 2, mar
circuit for a very stable crystal oscillator feedback (true): 2, may
crystal oven control (dewitt): 2, jun
remote transmitters and receivers (scott): 2, aug

vhf and microwaves

finally, some respect (rinaldo): 1, oct
microwave patent summaries (conwell): 5, feb 1986
uhf/microwave projects wanted: 10, apr

vhf+ technology (rrauss)

dual-gate fets: 7, apr
more interesting reading: 7, apr
uhf power triode bias circuits: 9, jan 1986
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index to qex issues 49-60
(all dates 1986 unless otherwise noted.)

antennas and transmission lines

antennas_a four day short course (thompson): 5, nov
how to measure antenna impedance (appel): 3, jan ྒྷ
how to tailor signal coverage with beam tilt (weinstein): 4, sep
use of the helical antenna on atv (mallozi): 5, jan ྒྷ

computers

a xerox 820-1 compendium (amrad) part 1: 7, jun
a xerox 820-1 compendium part 2: 7, jul
a xerox 820-1 compendium part 3: 14, aug
a xerox 820-1 compendium part 4: 10, sep
a xerox 820-1 compendium part 5: 12, dec
a xerox 820-1 compendium part 6: jan ྒྷ
ad astra (byrd): 4, mar
an evaluation of duping algorithms (todd): 4, jun
annie now available for ibm and compatibles (rautio): 17, apr
annie now available for ibm and compatibles feedback: 3, jun
a print routine for the computerized smith chart (sontag): 9, may
bishop graphics, inc assists cad users (thompson): 15, jun
coax/trap ti-99/4a computer program in basic (davis): 8, apr
computer magazines and disks-big business (thompson): 4, jan ྒྷ
error detection and correction codes (cowan): 6, nov
fcc cracks down on illegal microcomputer operations (thompson): 16, aug
interface solution needed (hornberger): 3, jun
new hardware runs old software (knaack): 3, dec
new software for digital circuit design (logicware): 9, nov
port of call (brewster): 3, mar
terminations for the c64 (lodstrom): 3, oct
the c primer (mcgraw-hill): 6, jul
the cad experience_part 1 (duncan): 9, apr
the cad experience_part 2 (noll): 8, may

editorials (rinaldo)

amplitude-compandored single sideband-priming the pump: 2, jun
amsat joins qex: 2, oct
automatic control for packet: 2, nov
control of third-party communications: 2, apr
hf packet networking: 2, jan ྒྷ
novice enhancement: a technical perspective: 2, jul
packet conclave in orlando: 2, may
packet radio-we're five years down the road: 2, sep
space symposium in dallas: 2, dec
the metamorphosis: 2, mar
to construct, or not to construct: that is the question: 2, aug

intellectual propertiles (conwell)

exploiting your mousetrap: 15, oct
patents: 16, apr
patents: 14, feb ྒྷ
the right to copyright: 12, jun
trademarks: 19, aug

miscellaneous

a bridge method of sweep-frequency impedance measurement (simons): 4, may
a graphical method of measuring impedances (petit): 3, sep
a high-resolution potentiometer (weller): 13, aug
a home-built frequency synthesizer for 45 to 75 mhz (crawley): 11, oct
a medium-power 144-mhz amplifier (schneider): 7, apr
a two-tone generator with very low distortion (pelissier): 10, dec
a two-tone generator with very low distortion feedback: 6, jan ྒྷ
a 100-mhz universal frequency counter (kunkee): 10, nov
a 903-mhz beacon on the air (stein): 13, jan ྒྷ
additional source for info on emp (cooper): 3, apr
additional sweep-frequency impedance measuring techniques (simons): 9, jul
amateur 902-928 mhz limitations clarified (fcc): 16, oct
analyzing simple matching networks (bacon): 3, feb ྒྷ
assertion: a picture is worth 1,000 words (rinaldo): 3, jul
an inexpensive repeater offset modification-from cb to 10 (pickers): 11,
may
be an author (rinaldo): 8, sep
calculate first (fleagle): 3, dec
call for papers (thompson): 7, aug
call for papers (thompson): 5, nov
cq wwvb (newland): 3, jul
crystal oscillator for digital circuits (newland): 9, sep
do you speak my language? (thompson): 10, apr
emp book source needed (leggett): 3, sep
from frequency counter to velocity measuring device (ennis): 3, jul
ham bats zero against nature (jansson): 15, jun
high-pass filters to combat tvi (jansson/wetherhold): 7, feb ྒྷ
how to convert a frequency counter to a velocity measuring device
(horowitz): 3, dec
inductance and capacitance magnification (schanker): 8, oct
information wanted on the 1n34 diode (weller): 3, may
measurements on the mc3359p (klingelhoeffer): 4, apr
padding calculations made easy (schanker): 7, sep
remembering the carbon composition resistor (balyoz): 3 mar
rf design holds first design contest. (breed): 17, mar
rf design holds second design contest (breed): 10, feb ྒྷ
search your shack (bledsoe): 15, jun
static in the workplace (thompson) 20, aug
surface mount technology (miles): 4, jul
the 1986 ieee mtt-s international microwave symposium (thompson): 14, may
word from afar (roberts): 14, nov

new products

a dream come true (rca): 16, oct
an swler's bible (radio database intl): 4, jan ྒྷ
a personal computer equals an oscilloscope? (genium publishing corp): 13,
jan ྒྷ
artech house announces new electronic books (artech house): 5, nov
assorted caps to fit the occasion (voltronics): 8, sep
bopla offers new digital housing display (compton): 13, jun
casio does it all-almost (thompson): 3, may
cleaning tips (chemtronics): 3, sep
come over to my pad (miller stephenson co): 11, oct
communication equipment protection (thompson): 9, dec
create your own circuits with protoflex-iii (girard electronics): 13, aug
custom made power cords (panel components corp): 15, jan ྒྷ
fiber optic literature available (allied corp): 13, sep
future antenna from future communications (thompson): 14, jun
hirose-the ideal connection (hirose electric usa): 13, sep
howard w. sams & co offers two new books for the electronics enthusiast
(howard sams & co):
9, nov
industrial devices will light up your life (industrial devices, inc): 13,
sep
instruments for telecommunications (intelco): 13, sep
more power in less space (mws wire industries): 13, sep
national semiconductor products (thompson): 4, jan ྒྷ
nemal offers new connector line (nemal): 8, jul
new books from mcgraw-hill (mcgraw-hill): 14, nov
new microwave modules distributor (lusis): 8, may
new parts source (thompson): 15, jun
new rom pac from hp unites power/portability at lower price
(hewlett-packard): 17, mar
new ti modem offers many benefits (texas instruments): 15, jun
optoelectronics data book (thompson): 10, may
pactec enclosures (thompson): 6, jan ྒྷ
panasonic-an energy source (thompson): 12, aug
product review list available (thompson): 9, jun
siliconix introduces the dg5240 family of high-speed cmos switching
(siliconix, inc): 9, nov
t & b sockets to you (thomas & betts electronics group): 11, oct
teledyne semiconductor offers op amp design kit (thompson): 12, aug
the no ditter (guimont): 11, oct
topaz semiconductor offers a selection of cmos/d-mos analog switches
(topaz): 15, sep
two new books of interest to the amateur community (howard w. sams & co):
13, jun
vector expands its line of prototyping cards (vector electronic co): 3, dec
where's your pad? (polyfoam packers corp): 13, sep

satellites

a psk demodulator for the jas-1 satellite (jarl's jas-1 committee): 3, aug
amsat announces "project linkup" satellite tests (riportella): 14, jun
amsat mode-s transponder (mccaa): 10, oct
build an oscar-10 psk decoder and receive telemetry (forbes): 14, oct
community access stations (eagleson): 8, aug
copy data from uosat-1 and uosat 2 (forbes): 8, sep
jas-1: a reality (thompson): 9, oct
jas-1 feedback (riportella/yamashita): 9, oct
jas-1 publication available (forbes): 13, aug
oscar gateway: chicago to the coasts (itter): 11, apr
oscar meeting announcement (forbes): 4, apr
oscar 10 satellite accessory available from project oscar (forbes): 9, sep
project linkup: a program synopsis (riportella): 4, mar
rudak: a status report (brenadorfer): 11, jan ྒྷ
satellite course offered (thompson): 7, aug
the birth of a new bird (thompson) 9, jun

specialized communicatlons techniques

acssb boards wanted (gaete): 3, jun
acssb in amateur radio (rinaldo): 5, apr
acssb on the air (larsen): 3, apr
acssb progress and vcr interference (buttschardt): 3, mar
acssb technical information source (varnicle): 14, jun
acssb tests (eagleson): 3, jun
audio standards for cellular and acssb systems (zavrel): 3, dec
ccw communications breakthrough (buttschardt): 3, apr
experimenting with direct-sequence spread spectrum (kesteloot): 5, dec
fcc trying to accommodate acsse users (thompson): 20, aug
help needed for acssb newcomer (brougher): 3, may
hf packet: comments and tips (latta): 4, dec
monitoring acssb signals (nowak): 3, jun
no-modification hf packet with the tapr tnc-1 or heath hd-4040 (gregory):
11, apr
packeteers v atvers (stone): 3, jun
packet radio magazine (thompson): 10, may
practical spread spectrum: a simple clock synchronization scheme
(kesteloot): 4, oct
predicting tropospheric openings using meteorological parameters (miller):
5, mar
preliminary acssb test results encouraging (eagleson): 3, jul
telecommunication program offers packet radio enhancements (kalt and
associates): 14, may
the great aurora of february 1986 (pocock): 7, jan ྒྷ
the michigan packet radio frequency plan (brooker): 13, mar

vhf and microwaves

vhf+ update (parker): 14, may

vhf+ technology (krause)

grounded-grid triode bias revisited: 16, sep
measured noise figure trends: 15, may
new transistors: 15, nov
spreading the word: 16, mar
twt information needed: 16, sep

yig filters and oscillators (richardson): 3, nov

>50 (olson)

chip capacitors: 14, sep
measuring antennas: 14, dec
mmics: gain blocks for modern equipment: 17, aug
noise figure measurement: 12, nov
rf power amplifiers: 15, jul
rf transistors: inside the package: 12, apr
rf transistor chips: 12, may
rf transistor chips: the saga continues: 10, jun
solid-state construction practices: part 1: 14, jan ྒྷ
solid-state construction practices: part 2: 11, feb ྒྷ
test equipment for the vhf/uhf and microwave experimenter: 12, oct
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index to qex issues 61-72
(all dates 1987 unless otherwise noted.)

antennas and transmission lines

a broadband vhf impedance measuring hybrid (caron): 3, feb 1988
antenna ideas for 3.5, 5.8 and 10.4 ghz (hilliard): 3, jan 1988
antenna impedance measurement results (appel): 3, apr
call for papers: the arrl antenna compendium, volume 2 (hall): 12, jan 1988
far-field fallacy (shuch): 10, dec
log periodic antenna design handbook (mallozzi): 5, jan 1988
measurement of antenna impedance (dodd, lloyd): 6, nov
measurement of antenna impedance feedback: 9, feb 1988
smith chart fundamentals (banks): 4, mar
smith chart fundamentals feedback: 15, may

computers

bulletin board changes user schedule (burr): 3, mar
calculate 5- and 7-element filter components (wetherhold): 4, may
calculate 5- and 7-element filter components feedback: 17, jul
computer interface for the kenpro kr-5400a-part 1 (perkins): 7, may
computer interface for the kenpro kr-5400a-part 2: 7, may
fast fourier transform tutorial (thompson): 16, sep
improved satellite tracking program (mcgwier): 13, dec
improved satellite tracking program feedback: 5, jan 1988
launch your own space station (thompson): 3, aug
new directions in amateur hf data transmission systems-part 1 (mclarnon):
3, dec
new directions in amateur hf data transmission systems-part 2 (mclarnon):
6, jan 1988
optical storage disks_futuristic storage space (frost & sullivan): 14, aug
red ryder returns to the airways (rosenne): 3, apr
surplus modules for the ibm pc (biro): 13, dec
tekdraw for the apple ii computer family (thompson): 13, mar
the commodore diagnostician (thompson): 13, dec
the tapr psk modem (johnson): 3, sep
the dtmf-64^2 decoder (kumetz): 4, apr
transferring c64 program files with amtor (nelson): 10, mar

editorials (rinaldo)

amateur satellites on the horizon: 2, jan 1988
getting a handle on sporadic e: 2, nov
just the fax, ma'am: 2, aug
on emission designators: 2, oct
on hatching incubators: 2, apr
parlez-vous nippon-go?: 2, dec
phase 4 initial design review: 2, may
standards alternatives for hf packet modems: 2, jun
the bk's thorny road to home: 2, feb 1988
the 13-cm band: 2, sep
two worlds meet: nts and packet: 2, jul
220: the good news is. . .: 2, mar

educational

a quick guide to paper and film capacitors (thompson): 16, jun
books for continuing education (thompson): 16, dec
catch up on your reading (thompson): 7, aug
eia publishes two electronic documents (thompson): 15, mar
fiber optic courses available on videotape (thompson): 9, oct
interface circuits data book available (thompson): 9, oct
international standard on the subjective testing of loudspeakers
(thompson): 9, jun
new book on digital communications focuses on technological advances in the
communications industry (thompson): 9, jun
new catalog reflects old times (thompson): 16, jun
new mouser catalog (thompson): 13, dec
over-the-horizon-radar (thompson): 12, jan 1988
select your training tools from the ieee (thompson): 15, jan 1988
telecommunications freedom-technology on the move: 5, jan 1988
text and viewgraphs from oet tutorial available (thompson): 3, aug

intellectual properties (conwell)

rectangular spectrum modulation: 16, jul
windshield-mounted antennas: 14, may

miscellaneous

a transverter band switching display and universal power supply (mascaro):
8, aug
cable counting (newland): 10, jun
cable counting feedback: 3, aug
calculate 5- and 7-element filter components (wetherhold): 4, may
calculate 5- and 7-element filter components feedback: 17, jul
call for papers (thompson): 13, oct
circuit designer's interface for the ibm pc (rockfield): 12, sep
continuing education offers new opportunities (thompson): 6, may
diversity reception (mclarnon): 3, oct
getting a practical test signal (cooper): 3, aug
emp literature increasing in popularity (leggett): 16, jun
emp petition dismissed (thompson): 3, mar
experiments in signal improvement with fractional-wavelength diversity
reception (kohl): 6, jul,
fcc experimental actions: 13, sep
fcc experimental actions: 13, dec
from 100 mhz to 1 ghz (shell): 3, may
how to measure transceiver tr switching times (newland): 8, mar
improved uhf-type connectors for half inch heliax (chaney): 4, aug
magazine chooses a winning design (thompson): 8, sep
midlatitude es at 220.1 mhz (owen): 4, oct
optimum wire size for rf coils (michaels): 6, aug;
optimum wire size for rf coils feedback: 3, oct
optimum wire size for rf coils feedback: 9, dec
overcoming fundamental overload (cooper): 3, apr
pocket-sized audio frequency counter (richey): 9, apr
pocket-sized audio frequency counter feedback: 16, jun
position and phase of the moon, 1987-2000 (owen): 4, jun
qex: 1987 index (thompson): 10, feb 1988
southcon/88 (thompson): 11, nov
surviving in the intermod jungle (bacon): 3, nov
table of equivalent ttl-ic values (thompson): 14, oct
the morphological table-an invention generator (leggett): 12, dec
why is this man smiling? (thompson): 14, jan 1988

new products

analog introduces an ultra-high speed monolithic op amp: 7, aug
bipolar equivalents replaced by new cmos rs-232-c driver and receiver ics
(thompson): 16, nov
california eastern laboratories markets new components: 11, sep
ceramic circuits_more functions, smaller packages (thompson): 9, jun
coil sample kits (kjellquist): 16, dec
convert a mechanical force to an electrical response (thompson): 15, mar
encomm inc appointed new distributor for yaesu rotator products: 13, dec
fm narrowband receiver: 16, nov
from schematic to pc board (thompson): 13, oct
high-gain modules for cellular radio (thompson): 11, nov
hitachi markets first cmos version of 6809 microprocessor (thompson): 3,
oct
imark markets digital id (thompson): 11, nov
improve the sensitivity of your test equipment: 13, dec
jackets for wire and cable (thompson): 15, jun
new components marketed by cel: 14, jan 1988
new product allows high-speed transmissions over telephone: 9, jul
new single chip modem meets three standards (thompson): 4, mar
new switched-capacitor filters make their debut: 9, nov
new 2400-bit/s option (thompson): 16, nov
shielded plus ribbon cables for idcs (thompson): 15, jun
surface mount repair (thompson): 15, mar
the diconix inkjet printer (thompson): 8, apr
zenith introduces flat-tension mask technology (thompson): 13, sep

satellites

amateur radio operator's satellite tracker accepted for nasa teacher in
space project (southwestern bell telephone): 17, jul
amsat-na technical journal available (thompson): 13, dec
amsat prepares for their fifth space symposium (pronko): 3, oct
asr feedback (riportella): 3, mar
computer interface for the kenpro kr-5400a-part 1 (perkins): 7, may
computer interface for the kenpro kr-5400a-part 2: 7, jun
first amsat phase 4 meeting successful (thompson): 3, jun
improved satellite tracking program (mcgwier): 13, dec
improved satellite tracking program feedback: 5, jan 1988
launch your own space station (thompson): 3, aug
national committee hosts space development conference (veres): 3, mar
oscar 10 suffers relapse (riportella): 11, sep
project oscar update (eagleson): 3, aug
satellite ethics questioned (walker): 3, apr
satellite tracking using a single axis (reed): 10, jul
space interest groups merge (l5 society): 3, aug
the university of surrey_a self-sufficient research center (sweating): 16,
dec
thoughts on emergency use of phase iiic and phase iv (eagleson): 9, sep
who's using biphase digital communications systems for emergency purposes?
(buttschardt): 3, apr
w0rpk-amsat bbs changes (wallio): 15 apr
1987 orbital predictions available (pronko): 3, apr

specialized communications techniques

a 1200-bit/s manchester/psk encoder circuit for tapr tnc units (mclarnon):
10, nov
call for papers for the arrl packet-radio conference (rinaldo): 3 mar
extracting stable clock signals from am broadcast carriers for amateur
spread-spectrum applications (kesteloot): 5, oct
extracting stable clock signals from am broadcast carriers for amateur
spread-spectrum applications feedback: 9, dec
facsimile in japan (iwasaki): 8, feb 1988
the tapr psk modem (johnson): 3, sep

vhf and microwaves

a simple and effective filter for the 10-ghz band (elmore): 3, jul
antenna ideas for 3.5, 5.8 and 10.4 ghz (hilliard): 3, jan 1988
microwave bomb complicates communications shielding (leggett): 3, aug
microwave update 1987 (hilliard): 3, jun
the central states vhf society plans their 21st annual conference (ward):
3, jun
thirteenth annual eastern vhf/uhf/shf conference (collins) 15, apr
vhf pak software (wilson): 16, aug

vhf + technology (krause)

traveling wave tubes: 15, dec
vhf+ equipment: 12, oct
vhf+ equipment: 14, feb 1988

>50 (olson)

coaxial cable: applications and recommendations: 14, sep
coaxial cable at vhf and uhf: 15, aug
computer-aided design of rf circuits-an introduction: 11, jan 1988
introduction to 9 cm: 14, jul
power dividers and combiners: 10, oct
rf switching: 12, nov
solid-state construction practices, part 3: 14, mar
solid-state construction practices, part 4: 13, apr
solid-state construction practices, part 5: 13, may
solid-state construction practices, part 6: 11, jun
vhfers' guide to continuing education: 14, dec
33-cm band survey: 12, feb 1988

13 centimeters (olson)

constructing a 13-cm station, part 1: 13, jan 1988
equipment for 13 cm, part 1: 15, nov
introduction: 15, sep
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qex index march 1988 - february 1990 (volumes 73 - 94)

antennas and transmission lines

automatic antenna controllers (prendergast): 8, aug 88
parabolic paradox (shuch): 5, apr 88

components (forbes)

amd am79c401 packet controller: 17, feb 89
american microwave attenuator and pulse modulator: 13, dec 89
amp data line protector: 14, apr 89
anadigics aps30010 180 degree active splitter: 17, feb 89
analog devices programmable delay generator: 12, sep 88
aromat photo-mos relays: 12, sep 88
caddock compact power resistor: 12, sep 88
chip capacitor/resistor sample kit: 14, apr 89
crystal semiconductor digital audio converter: 17, feb 89
digi-key: 14, apr 89
double-balanced mixer and rf switch: 18, apr 88
dtmf decoder: 18, apr 88
eg&g reticon rf6609: 12, sep 88
ericsson/rifa pbl3726/19 telephone speech-circuit ic: 17, feb 89
exar high-speed data communication chip set: 17, feb 89
five-year lead-acid battery: 12, sep 88
fm receiver on a chip: 18, apr 88
ge surge suppressors: 16, jun 88
ibm0 ps/2@ model 30 286: 17, dec 88
inductor sources, 17, dec 88
inresco circuit saver: 17, dec 88
jameco electronics: 12, jun 89
led clusters: 14, apr 89
low-cost voltage regulators: 13, nov 89
maxim's max260 universal filters: 13, aug 88
microchip cmos digital signal processor: 13, nov 89
micro crystal division: 17, dec 88
micro linear ml2111 univeral filter: 14, aug 88
micrometals toroidal cores: 16, jun 88
microprocessors unlimited, inc: 12, jun 89
more on toroids: 13, aug 88
motorola one-time programmable microcontroller kit: 13, jun 89
murata/erie crystals and oscillators: 12, dec 89
nec microwave prescaler family: 17, dec 88
nec upg106 wideband agc amplifier: 13, nov 89
nec upg107 microwave switch: 13, nov 89
new intel microprocessors: 13, aug 89
nine-volt lithium battery: 18, apr 88
photo cells: 13, jun 89
polycore rf devices: 17, dec 88
qualcomm q2334 digital synthesizer: 12, jun 89
reader response: 17, dec 88
reader survey: 14, apr 89
reader survey: 12, jun 89
rf power amplifier modules: 12, sep 88
rf power amplifiers: 16, jun 88
siemens sab82525 data controller: 17, feb 89
signetics cmos frequency synthesizer: 16, jun 88
silicon systems dtmf transceiver: 17, feb 89
silicon systems 2400 bit/s modem chip: 12, sep 88
siliconix analog switches: 12, jun 89
spectrum digital signal processing: 12, dec 89
surface-temperature sensor:, 14, apr 89
switched-capacitor filters: 13, aug 88
switched capacitor handbook: 12, sep 88
tdk emi/rfi components: 12, sep 88
teledyne cmos switch-mode power-supply controller: 13, aug 88
universal filter building block: 12, jun 89
us sertek ps/2 chip set: 17, feb 89
wideband amplifiers from mini-circuits: 13, jun 89
xicor e2pot: 16, jun 88
5-volt power supply on an 8-pin dip!:, 14 apr 89
12-ghz mmic switches: 14, apr 89

computers

ao-13 satellite mutual windows program for g64 and ibm
compatables: 13, jul 89
ao-13 telemetry decoding software: 11, sep 88
asat: an apple-based satellite imaging system (zehr) 3, mar 88
cae/cad tools: 15, jul 89
kantronics morse tutor pc: 8, jul 88
macket software for macintosh computers: 4, jun 88
the pc-bandit: 7, jun 88
plan-13 tracking program: 13, jul 89
pseudo-sync, a terminal program for mode b amtor (egleston) 8, nov 89
rapid prototyping a dsp56001 ibm pc/clone system (borden): 3, feb 90
satellite-tracking program for commodore computers: 4, jun 88
squint plan: 13, jul 89
a weather-facsimile display board for the ibm pc (shuch): 3, sep 88;
    feedback: 14, nov 88
8052ah-basic micro project controller (hinrichs): 3, oct 88;
    feedback: 14, nov 88

correspondence

and another program change [dodd/lloyd article] (dodd): 3, may 88
the angry sun (rose): 13, sep 88
calculating distance using usgs maps (cowan): 7, jul 89
crystal filter design bibliography (mallozzi): 11, jan 89
diversity technique bibliography [key to citations] (mallozzi): 3, apr 88
dodd/lloyd article stirs up impedance discussions (lund): 3, may 88
dodd/lloyd program corrections (dodd): 9, aug 88
a high-stability audio oscillator (carter): 14, feb 89; feedback: 11, jun 89
impedance measuring - redux (jenkins): 12, sep 88
impedance-measuring hybrid comments (weller): 3, jul 88
intermodulation investigation (parnass): 3, apr 88
microsats on the way (riportella): 13, sep 88
more "hams in space" operations coming (tynan): 12, nov 89
more impedance-measuring hybrid comments (weller): 9, aug 88
more on the g3tso transceiver (heitner): 8, dec 89
notes on the g3sto modular transceiver (grierson): 8 dec 89
on packet modulation standards (wescott): 15, jan 90
packet sounding networks (jakubowski): 3, may 88
picking bones on the mc68701 burner (swendson): 15 jan 90
the rockwell r24mfx modem (parks): 10, aug 89
a simpler method [dodd/lloyd article] (jenkins): 3, may 88
some thoughts about smt (lau): 3, jul 88
some thoughts on hf packet radio standards (solie): 11, jun 89
suggestions for building and using the w8cgd impedance-measuring
    box (weller): 4, jul 88
tactical lf transmitting antenna test (francis): 12, sep 88
tropo backscatter (blom): 10, mar 89

editorials (rinaldo)

amateur radio education: 2, apr 89
amateur radio technical conferences: 2, nov 88
amsat announces pacsat project: 2, sep 88
amsat spins off technology: 2, mar 89
ao-13 and beyond (francis): 2, aug 88
the arrl laboratory: a new look: 2, mar 88
computer networking conference: 2, nov 89
contributing to the propagation art: 2, sep 89
creative consumption (hutchinson): 2, jun 89
a digital weekend: 2, jan 89
documenting contributions: 2, may 89
hf packet initiative: 2, jul 89
have we got a deal for you?: 2, may 88
looking to the future - public land mobile and amateur: 2, dec 89
more on the hf packet design quest: 2, jan 90
part 15 engineering discussions: 2, aug 89
phase 3c launch ~ successful!: 2, jul 88
phase 4: let's get serious (jansson): 2, feb 90
spectrum management: 2, dec 88
sta extension for skipnet autoforwarding network: 2, feb 89
strategic planning: 2, oct 88
teaching a new dog old tricks (bloom,): 2, oct 89
technical excellence: 2, apr 88
turning the page: 2, jul 89
wear a tc hat (palm): 2, jun 88

educational

application notes: 4, feb 90
boston computer society establishes amateur radio
special interest group: 9, aug 89
call for papers: second frequency control and synthesis conference: 15, may 88
call for papers: 22nd central states vhf conference: 4, apr 88
celwave free seminar program: 15, mar 88
courses on mechanical behavior and service life of plastics: 14, dec 88
dataspace ྕ: 13, jun 89
date changed for amsat space symposium: 14, aug 89
far scholarships (turnbull): 13, mar 88
international conference on communications [ieee]: 15, may 88
invest in your future - upcoming courses: 6, apr 88
mir pamphlet available from amsat-uk: 3, jul 88
r & b enterprises offer training courses: 5, may 88
rf technology expo 89: 13, dec 88
rsgb news - what's happening across the pond [rsgb holds first data
    symposium]: 15, may 88; feedback: 18, jun 88
sixth space symposium and annual meeting [amsat]: 7, nov 88
third generation wireless access information networks workshop: 13, apr 89
14th annual eastern vhf/uhf/shf conference: 4, apr 88
1989 ieee sponsored and cosponsored conferences: 13, apr 89

miscellaneous

arrl morse code shaper (hare): 9, dec 89
arte - amateur radio tracking experiment (babulski): 5, dec 89
build-it-yourself handheld transceiver: 7, nov 88
call for dsp sources: 15, mar 88
coherent cw (lumb): 10, aug 89
cw and ssb audio filters using 88-mh inductors (wetherhold): 3, dec 88
designing lc filters using svc filter tables (wetherhold): 8, jun 88;
    feedback: 4, jul 88
dynascan corp buys lloyd's electronics: 5, may 88
an emergency broadcast system receiver (williamson): 8, nov 88
g3tso's modular hf transceiver - part 2 (grierson): 4, sep 89
heath's hk-21 pocket packet tnc donated for use in space shuttle: 12, mar 89
high-voltage breakdown tester (measures): 5, aug 88; feedback: 11, jun 89
impedance bridge (hanning): 3, jun 89
ko51 named amsat general manager: 4, nov 89
a logarithmic rf detector for filter tuning (lau): 10, sep 88
mc68701 programming board (oscarson): 3, may 89
mmics mimic mixer (shuch): 3, mar 89; feedback: 11, jun 89
modular multiband transceiver - part 1 (grierson): 3, aug 89
nonlinear applications using the avantek mmics (ward/wagner): 10, jun 89
notes on a lightweight, portable cw transmitter with a transformerless
    power supply (vreeland): 11, jun 88
receiver front-end protection (clark): 8, may 89
rf power fets, their characteristics and applications -
    part 1 (granberg): 3, jan 89
rf power fets, their characteristics and applications -
    part 2 (granberg): 10, feb 89
searching for information (mote): 3, dec 89
a simple, direct-reading, digital inductance meter (vreeland): 11, may 89
superconductivity - more than just levitation (thompson): 10, mar 88
transpolar skitrek and project north ski communications (ensign): 13, apr 88
yaesu usa consolidates facilities: 14, jul 88
a 6-meter oscillator (becker): 11, nov 88
a 192-mhz local oscillator for home-brewers (lau): 14, jun 88
a 759-mhz local oscillator (mascaro): 12, may 88

new books

amsat-uk catalog: 7, jul 89
ao-13 handbook: 14, jan 89
artech house books: 8, dec 89
beginners guide to packet radio: 11, apr 89
beverage and longwire antenna theory and design: 17, apr 88
beverage antennas for hf communications, direction finding and
    over-the-horizon radar: 14, dec 88
darc verlag uhf compendium: 11, sep 88
digital video in the pc environment: 9, aug 89
do you have electrical savvy?: 19, apr 88
eia committee roster: 14, sep 88
high-frequency switching power supplies: theory and design: 9, aug 89
on increasing the radiation efficiency of beverage type antennas: 14, dec 88
the lan bookstore: 5, may 88
lan sakes [iso/iec 8802-3]: 7, jul 89
land mobile communication standards: 11, apr 89
loop antennas, design and theory (mallozzi): 17, apr 88
the national radio club's antenna pamphlets: 17, apr 88
the nrc antenna reference manual - vol 1: 17, apr 88
the nrc antenna reference manual - vol 2: 17, apr 88
new audio engineers handbook: 14, sep 88
new books from cms publications: 3, sep 89
ntis publications: 14, dec 88
on-line electronic catalog [schwebernet]: 9, mar 88
oscar-13 handbook: 13, jul 89
pomona electronics catalog: 7, jan 89
a practical guide to the design of rhombic aerials: 14, dec 88
printed circuits handbook: 9, mar 88
selected areas in communications: 11, nov 89
spectrum catalog: 11, nov 89

new products

amsat-na offers tapr psk demodulator boards: 13, jul 89
analog simulation package: 11, nov 89
aor miniature mobile scanner: 10, aug 88
battery-powered directional wattmeter: 7, nov 89
battery-powered signal intensifier: 11, apr 89
circuit prototyping system for toshiba lap-tops: 4, feb 90
coaxial products: 15, mar 88
computer power interrupters: 11, apr 89
conductive paint: 14, aug 89
dual slope a/d converter with expandable analog multiplexer: 14, jan 89
flexible and rigid resin system: 7, nov 88
gassol soldering tool: 10, mar 89
hand-held multimeters: 4, feb 90
high-voltage multilayer ceramic chip capacitors: 13, nov 89
hp solid-state relays: 14, feb 90
improved receiver preamplifiers: 14, jan 89
kantronics ptt watchdog: 8, jul 88
lemo connectors: 13, apr 88
lightweight wind generator for emergency power: 14, sep 88
low cost, wide band gaas mmic amp: 12, feb 90
low-priced workstation: 8, dec 89
a marker tailored for flat ribbon cable: 19, apr 88
monitor 1-232: 16, jun 88
multilayer universal prototyping board [md12brd]: 10, jun 88
nec high-gain heterojunction fet: 14, nov 88
nec ne647 and ne648 high-frequency bipolar transistors: 16, feb 89
nec silicon mmic prescalers: 17, jul 88
nec super mini-mold: 7, nov 89
nevada in the united kingdom [tm1000]: 11, sep 88
new silicone gels: 14, feb 90
new teledyne cmos dual mosfet drivers: 11, jan 89
quad power driver: 4, feb 90
replacement oscilloscope probe kits: 15, jul 89
siq repeater controller: 17, jul 88
sprague pps film capacitors: 11, jan 89
teledyne semiconductor markets new components [tsc-9405, 500a,
    7652]: 11, may 88
tunable notch filters for 30 to 900 mhz: 14, aug 88
uhf spectrum analyzer [sa-500e 550-mhz]: 18, apr 88
window glass tester for mobile antenna compatibility: 14, sep 88
xr-2900 faxidata modem chip set: 4, nov 89
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satellites

the ace orbit: a new communications satellite orbit (turner/price): 8, mar 89
active amateur radio satellites: 12, aug 89
ao-13 telemetry decoding software: 11, sep 88
asat: an apple-based satellite imaging system (zehr): 3, mar 88
design team integrates microsats (photos): 6, dec 89
introduction of jas-1b (jarl): 12, sep 89
jarl plans second amateur radio satellite (jarl news): 11, sep 88
a low-noise preamp for weather satellite vissr reception
    (shuch): 3, feb 89; feedback 11, jun 89
memorandum-of-understanding: 11, jun 89
new 10 meter net for oscar satellite beginners: 13, apr 89
newest oscar readied for june launch (riportella): 19, apr 88
radio sputnik bulletin from rs3a: 9, aug 89
satellite-tracking program for commodore computers: 4, jun 88
your window for visually observing satellites (riportella): 5, jul 88

specialized communications techniques

algorithms and methods for sitor/amtor systems (newland): 9, jul 88
an amtor mailbox standard (martinez): 5, feb 90
a bar-graph tuning indicator for fec-dec (newland) 3, nov 89
facsimile over a high-frequency radio link (parks/ curran): 8, sep 88
a federal standard for hf radio automatic link
    establishment (adair/peach): 3, jan 90
the gb7pl)( amtor gateway mailbox (martinez): 6, feb 90
net98.exe: a japanese version of the ka9q internet (tcp/ip) package
    (yamada/kushida): 3, jul 89
path selection - part 1 (haarsager): 11, dec 88
path selection - part 2 (haarsager): 8, jan 89; feedback: 10, mar 89
practical spread spectrum: achieving synchronization with the
    slip-pulse generator (kesteloot): 6, may 88
practical spread spectrum: clock recovery with the synchronous
    oscillator (kesteloot): 7, jun 89; corrigendum: 10, aug 89
practical spread spectrum: an experimental transmitted-reference
    data modem (kesteloot): 8, jul 89
a selective calling decoder for mf/hf radio systems (newland): 3, apr 89
some ideas for a robust hf packet signal design (kaplan): 5, nov 89
a tuning aid for packet radio, rtty and sstv (biolcati): 10, sep 88

vhf and microwaves

1.3 ghz measurements using home-brew gadgets (reed): 8, jan 90
characteristics of some common power tubes at 432 mhz
    (powlishen): 3, nov 88; corr/feedback: 12 apr 89
hy-brid hi-power (pettis): 13, jan 90
parabolic paradox (shuch): 5, apr 88
solid-state linear amplifiers for 33 cm (hallidy): 5, jun 88
two 7289s on 903 mhz (schofield): 7, apr 88
a vhf/uhf/microwave transverter if switch (lau): 3, aug 88
wideband microwave amplifier design (shuch): 3, oct 89
a 0.5-watt 903-mhz amplifier (lau): 3, jun 88

vhf + technology (krauss)

another method for getting on the microwave bands: 16, apr 88
how one vhf+er found a new use for winter evenings or is it too
  early to begin spring cleaning?: 13, mar 89
intermodulation distortion: 16, jul 88
low-noise amplifiers, and components therefore: 11, aug 89
mystery of the missing cavities: 13, mar 89
odds and ends: 15, jul 88
proper microwave chip capacitors: 14, oct 89
some thoughts on vhf+ construction: 14, oct 89
state of the art: 430 mhz, antennas: 14, sep 88
state of the art at 70 cm - continued: 12, nov 88
state of the art above 1 ghz: some introductory considerations: 10, may 89
state of the-art: the 23-cm band: 11, aug 89
state of the-art: 2300-2450 mhz: 14, dec 89
traveling-wave tubes, continued: 12, nov 88
update on twta information requests: 16, apr 88
vhf + conferences - what was found: 15, feb 89
vhf/uhf contest operating: 13, feb 90
220-mhz "state of the art": 16, jul 88
430-mhz state of art: conclusion: 15, feb 89
1988 conference proceedings: 13, mar 89

13 centimeters (olson)

2160-mhz local oscillator: 14, mar 88

>50 focus on technology above 50 mhz (olson)

electromagnetic waves and antenna polarization: 11, aug 88
inexpensive low-power microwave terminations: 17, jun 88
new products for the >50 audience: 12, mar 89
reflector antennas: 15, dec 88
reflector antennas:dish construction and surfacing: 11, mar 89
reflector antennas: dish feeds and recommendations: 12, jan 89
rf filters for vhf and uhf: an overview: 14, apr 88
rf filters for vhf and uhf: part 2, practical designs: 16, may 88
rf hybrid modules: building with bricks: 13, jul 88
solid state rf amplifier update, part 1: receiving devices: 14, jul 89
using surplus 75-ohm hardline at vhf: 12, mar ??

feedback on previous articles

extracting stable clock signals from am broadcast carriers for amateur
    spread spectrum applications, oct 87: 18, jun 8
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qex index march 1990-february 1991 (volumes 97-108)

components (forbes)

bnc to banana plug adapters: 15, mar 90
dc-to-dc converter: 13, feb 91
designing circuits with leds: 15, jul 90
digital fundamentals: 17, nov 90
digital video "dvi" technology: 12, sep 90
gate basics: 12, sep 90
gore-tex for hams!: 12, sep 90
harris single-chip power supply: 17, nov 90
integrated mixer covers 500 khz to 500 mhz: 13, sep 90
lm1211 single-chip if: 11, may 90
micro linear programmable sinewave generator: 16, jul 90
microprocessor-compatible dtmf transceiver: 18, nov 90
miniature din sockets: 12, feb 91
national semiconductor lm1211: 15, mar 90
quad pin diode drive: 15, mar 90
shift registers: 12, feb 91
silicon mmic: 12, feb 91
single-chip fax modem: 12, feb 91
smart cooling fan: 12, feb 91
spdt wide frequency antenna switch: 15, mar 90
speaking of connectors. . .: 15, mar 90
triquint tq9121 : 15, jul 90
voltage regulators: 11, may 90
30- to 1500-mhz filters: 15, mar 90
1230- to 1250-mhz coupler: 13, sep 90

computers

graphics by packet-introducing naplps software from japan
    (cowhig): 7, apr 90
a review of phil geffe's filterware, band (wetherhold): 11, apr 90

correspondence

amateur web (wolos): 16, dec 90
an abbreviated list of references (campbell): 13, jul 90
antenna-impedance measurement update (dodd): 10, may 90
clarifying thoughts on phase 4 (nafzger): 15, dec 90
coherent cw group (lumb): 14, jul 90
comments on 13 cm (campbell): 13, jul 90
comments on 13 cm [reply] (krauss): 13, jul 90
comments on 13 cm + (lau): 15, dec 90
down with hf packet retries (bloom): 13, apr 90
filling in the gap (orr): 10, may 90 hf
diversity tests (cook):13, apr 90
lzw and gif explained (blacksome): 11, mar 90
more on us/foreign equivalents (hornbostel): 15, dec 90
more on us/foreign equivalents (isa): 15, dec 90
packet error control and lzw compression (gay): 11, mar 90
phase 4 - time to move ahead (klingelhoeffer): 10, may 90
pseudo-sync clarification (egleston): 14, jul 90
stripped-down tnc (wolos): 16, jan 91
telemetry reception with the pk-232 (sodja):16, jan 91
us versus foreign component equivalents (bonavita): 14, apr 90

editorials (rinaldo)

amateur radio experimenting - it's one world: 2, nov 90
the blooding of the spectrum: 2, apr 90
coming soon to a sky near you: 2, jun 90
digital committee meets: 2, jul 90
fall 1990 qex survey results (weinberg): 2, dec 90
future systems: 2, may 90
let not the light be hid from their eyes: 2, jan 91
london on thames - ontario: 2, oct 90
pcs - the next generation: 2, sep 90
report of the arrl/amsat sarex working group (neal): 2, feb 91
spin-offs: 2, aug 90
1990 the year of the amateur satellite program: 2, mar 90

educational

amsat-na space symposium: 22, jul 90
call for papers - amsat-na space symposium: 22, jul 90
eastern vhf/uhf/shf conference: 9, apr 90
oscar seminar: 8, jul 90
pacsat launch boost third world communication (vita): 17, may 90
seventh annual rf expro west: 5, dec 90
tapr fax: 12, may 90
1990 amsat space symposium: 4, may 90
9th computer networking conference: 16, jul 90
25th central states vhf society conference: 11, feb 91

miscellaneous

a compact 1-kw 2-50 mhz solid-state linear amplifier
    (granberg): 3, jul 90; corrigendum: 14, aug 90
calibrating diode detectors (grebenkemper): 3, aug 90
the fourth method: generating and detecting ssb signals (vangraas): 7, sep 90
hf frequency synthesizer. . . easier than ever (boillat): 14, jan 91
high accuracy noise bridge (schmidt): 3, mar 90
a high-performance narrow-band 534-hz cw filter using five 88-mh
    inductors (wetherhold): 6, dec 90
qex index march 1990 through february 1991 (vols. 97-108): 19, feb 91
modifications and improvements to the hw-9 (mclellan): 3, oct 90
propagation note (sweet): 14, mar 90
qex 1990 reader survey: 15, aug 90
the safari-4: a high-integration, 4-band qrp transceiver -
  part 1 of 3 (burdick): 10, oct 90
the safari-4: a high-integration, 4-band qrp transceiver -
    part 2 of 3 (burdick): 3, nov 90
the safari-4: a high-integration, 4-band qrp transceiver -
    part 3 of 3 (burdick): 11, dec 90
small aperture ir optical links using led light sources (foltzer): 9, aug 90
a standard for morse timing using the farnsworth technique (bloom): 8, apr 90
switching power supplies for high voltage (hulick): 3, feb 91

new books

communications formulas & algorithms for systems analysis and
    design: 13, feb 91
microprocessors: a programmer's view: 17, may 90
radar handbook: 14, apr 90

new products

kantronics dataengine: 22, feb 91
kantronics telemetry unit: 22, feb 91
lca-1 (tatum labs, inc): 8, aug 90
pmrk-2 heater kit (shf microwave parts co.): 10, may 90
high efficiency power amplifier simulator (design automation, inc): 14, aug 90

satellites

a fifteen channel remote controller for an oscar array (white): 11, jun 90
initial phase-3d experimenters' meeting may 7-9, 1990 (amsat-dl): 10, nov 90
microsat demodulator (reed): 3, sep 90; corrigendum: 18, nov 90

specialized communications techniques

the amtor mailbox standard: a progress report (martinez): 9, jan 91
the "cloverleaf" performance-oriented hf data communication system (petit): 9, jul 90
design of a multi-tnc controller (bakkers, hoogzaad and schwirtz): 3, jun 90
faster synchronizing for mode b amtor (egleston): 3, dec 90
low-power portable packet terminal (avritch): 3, jan 91
microsat bi-phase modulator: interfaces with any vhf tnc (reed): 10, jan 91
more ideas for a robust hf packet signal design (mclarnon): 9, mar 90
more 144-mhz auroral e (pocock): 3, may 90
packet radio opens communication in sudan (mantey) 8, may 90
practical digital signal processing: a simple, high-performance
    a/d board (kesteloot): 3, apr 90
pseudo-sync: a terminal program for mode b amtor, part ii
    (egleston): 5, may 90 - clarifications: 14, jul 90
the sporadic-e season of 1989 in review (pocock and dyer): 17, oct 90

vhf+ technology (krauss)

alfred twt amplifiers: 15, apr 90
new book announcement-rsgb microwave handbook, vol 1-components and
    operating techniques: 19, jun 90
the next-to-final frontier: 21, oct 90
now is the time to better your performance: 20, oct 90
on the other end (...of the spectrum): 10, feb 91
state-of-the-art in the 3300-3500 mhz (9-cm) band: 15 apr 90
state-of-the-art in the 5650-5925 mhz (6-cm) band: 20, jun 90
state-of-the-art in our 10- and 24-ghz (and up) bands: 17, aug 90
this and that: 17, aug 90

corrigendum on previous articles

a compact 1-kw 2-50 mhz solid-state linear amplifier (granberg): 14, aug 90
hy-brid hi-power (pettis): 14, mar 90
microsat demodulator (reed): 18, nov 90

gateway

applications

amtor-packet link station list: 15, may 90
ares/data version 1.2 available: 15, may 90
hf packet radio with psk successful: 13, may 90
an important message for packet mailbox users: 15, sep 90
ip address coordinator list: 17, feb 91
ip address coordinator list update: 19, mar 90
ip address coordinator list update: 16, sep 90
a medium speed modem for ax.25 packet radio links: 23, jun 90
more psk activity: 20, nov 90
multiple tncs per radio: 14, may 90
packet provides spontaneous fire plotting: 14, sep 90
packet radio and sstv ok'd in ussr: 21, aug 90
packet-radio distributed bbs operational: 19, apr 90
packet radio help line established: 21, jan 91
packet radio links on 23 cm: 20, aug 90
packet radio frequency coordination?: 21, aug 90
packet-radio nts information source: 15, may 90
prototype 905-mhz digital radio completed: 16, mar 90
rhode island ip address coordinator: 21, jan 91
rose packet-radio networking list: 21, nov 90
services available on tcp/ip: 21, jan 91
unix and packet radio: 19, jan 91

commercial products

piggy packet system available for aea pk-232: 14, may 90
product review - kantronics 56 k-baud data engine: 18, apr 90
ps-186 from aea: 22, aug 90

miscellaneous

amsat space symposium draws large crowd: 20, dec 90
better bulletins: 20, nov 90
bhf packet net moves to 17 meters: 21, jan 91
c programmers' group: 22, aug 90
court affirms fcc's reallocation of 220 mhz: 18, jan 91
the digicom exchange: 20, dec 90
digital control petition withdrawn: 22, jun 90
don't use alias in your mail: 15, feb 91
eu-ham electronic newsletter: 23, nov 90
fax modem tests conducted: 19, dec 90
first latvian hf packet-radio qso: 25, oct 90
gateway editor - new internet address: 23, nov 90
hello, rose of texas: 20, dec 90
help wanted building backbone: 21, jan 91
an introduction to flaming: 20, dec 90
johnson space flight center to host amsat symposium: 16, may 90
new ip address coordinators: 23, nov 90
old dogs, new tricks: 22, dec 90
an open letter to qst: 15, sep 90
packet in aipotu: 21, dec 90
packet radio covered in southern california 6-meter band plan: 26, oct 90
packet radio stars at dayton hamvention: 21, jun 90
polish packet radio: 19, jan 91
sta authorization extended: 14, feb 91
tapr annual meeting: 18, apr 90
tapr annual meeting on tap: 14, feb 91
tapr annual meeting scheduled: 20, dec 90
tapr annual meeting set for march: 19, jan 91
tapr packet radio status: 16, may 90
tsarc packet-radio coordination form: 22, nov 90
tsarc packet-radio coordination questionnaire: 22, nov 90
walking mobile packet-radio station around the earth: 23, oct 90
western washington packet coordination shifts: 21, nov 90

networking

arrl/crrl networking conference - call for papers: 22, jun 90
arrl/crrl 9th computer networking conference: 19, aug 90
automatic packet-radio location system (apls) proposal: 15, feb 91
broadcast protocol specification fixes: 22, dec 90
connectionless mail protocol and more: 19, jul 90
networking conference proceedings available: 25, oct 90
a new service, the call sign server: 18, jul 90
north east digital association filling a need: 17, jul 90
transpack - networking the soviet union: 25, oct 90
9th computer networking conference report: 19, nov 90

satellites and spacecraft

amsat-italy microsat progress: 22, jun 90
ao-16 pbbs up and running: 17, dec 90
austrian amateur radio project to fly on mir: 20, nov 90
dsp used to receive dove mode s packets: 15, may 90
jarl fo-20 command team report: 23, nov 90
low-cost, portable pacsat station operational: 19, dec 90
microsat bbs progress report: 20, aug 90
microsat status report: 19, aug 90
new packet-radio satellite in the works: 15, sep 90
nk6k talks about future pacsat pbbs operations: 23, oct 90
packet-radio satellites status report: 17, apr 90
rudak-2 to carry packet radio: 13, may 90
rudak-2 launch: 18, jan 91
rudak-2 launch imminent: 20, dec 90
sarex makes connections: 18, jan 91
sarex packet-radio logs and qsls: 25, oct 90
sarex status report - mini-hamfest in space: 20, aug 90
sarex-2 tested: 19, apr 90
space bits: 14, feb 91
space station to get packet radio: 19, jan 91
tracking software being pirated: 23, nov 90
uosat/microsat pbbs passes alpha tests: 14, sep 90
wo-18 ccd camera iris settings experiments: 17, jul 90
9600 baud data communications via satellite: 13, may 90

software/firmware/hardware

amiga, atari and unix versions of ka9q's tcp/ip software available: 19, apr 90
c-64 terminal program for blind hams: 17, jul 90
g8bpq pcnode version 3.57 available: 17, jul 90
graphic pbbs software proposal: 18, dec 90
ground station software for satellite pbbs: 17, dec 90
kantronics v3.0 firmware ready: 24, oct 90
macintosh tcp/ip version 2.0 ready: 17, jul 90
microsat software development report, 16, mar 90
new software available: 19, jan 91
new software available: 14, feb 91
new tnc 2 firmware available: 17, apr 90
new tnc 2 firmware released: 15, feb 91
pc tnc emulation software available: 14, feb 91
pc tnc emulation software in the works, 23, jun 90
software for the packet-radio station: 17, mar 90
texnet version 1.60 in the works: 18, dec 90
texnet-tnc firmware on the horizon: 16, mar 90
w1hue and poli change addresses: 19, apr 90
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qex index march 1991 february 1992: (volumes 109-120)

components (forbes)

be careful!: 14, mar 91
basic architecture of a microprocessor: 15, sep 91
communications controller: 18, may 91
digital electronics: may 91
digital memory: 14, mar 91
dolby on a chip: 16, sep 91
flush-mounted nuts: 14, mar 91
high capacity nicd batteries: 14, mar 91
how the microprocessor executes its software: 11, nov.
low bias-current op amp: 1 5, jan 92
low-dropout voltage regulators: 1 5, jan 92
mec surface mount switch: 1 0, jul 91
microphone preamplifier: 11, nov 91
microprocessor - a programmable logic component: 10, jul 91
memory "coins": 11, nov 91
new battery technology may replace nicds: 1 8, may '
programmable sinewave generators: 1 6, sep 91
rf connectors: 1 0, jul 91
tiny rf mixer: 10, jul 91
what's a dsp do?: 15, jan 92
2-gigabyte disk drive: 1 0, jul 91
20-bit audio dac: 1 5, mar 91
60-mflops dsp introduced: 15, jan 92
900-mhz power amplifiers: 14, mar 91
2400-bit/s modem chip: 15, sep 91

correspondence

antenna rotor system (hornbostel): 13, dec 91
a call for more experiments combining microwave and cdma
    technology (rutz): 13, mar 91
comments on "the fourth method" (anderson): 12, mar 91
comments on the october safari-4 qrp transceiver article
    (klingelhoeffer/burdick): 12, mar 91
comments on measuring the mass of the earth (wetherhold): 13, feb 92
congrats in order (anderson): 15, may 91
digital communications protocol (wickwire/shuch): 12, feb 92
gil - graphics interchange language (williams): 9, jul 91
hw-9 modifications update (mclellan): 16, may 91
lusat frequency changes (kayser): 15, may 91
more on the safari-4 and cdma vs. tdma (zavrel): 8, jul 91
packeteers, you are what you write (rosenfeld): 9, oct 91
parts for the "ssb exciter" (anderson): 12, dec 91
pervasive technology (leggett): 13, jan 92
pk-232 telemetry reception modification (moroni): 3, sep 91
qex - still an experimenters' exchange? (lau): 16, may 91
signetics ne602 as a test instrument (bowman): 11, aug 91
some feedback (duff): 15, may 91
some interesting power supply chips (hornbostel): 3, sep 91
switching power supplies (anderson): 9, jul 91
"switching power supplies" addition (smith): 12, dec 91
a vhf crystal-controlled oscillator with negative ground (bowman): 10, aug 91
a vhf crystal-controlled oscillator with positive ground (bowman): 10, aug 91
whither experimentation? (isard): 141 jan 92
900/901 series (wolos): 8, jul 91
38,400 bit/s packet radio comments (papson): 3, sep 91

corrigendum

hf frequency synthesizer...easier than ever (boillot, jan 91): 22, jun 91
low-power portable packet terminal (avritch, jan 91): 22, jun 91
measuring the mass of the earth - the ultimate moonbounce
    experiment (shuch sep 91): 14, jan 92
switching power supplies for high voltage (hulick, feb 91):
    21, aug 91; 15 nov 91

editorials (rinaldo)

amsat-uk colloquium - the sixth: sep 91
countdown to warc-92: 2, apr 91
digital communications and future systems committees: 2, feb 92
hf packet radio r&d project update: 2, mar 91
i know you're out there i can hear you acking (ke3z): 2, dec 91
pervasive technology: 2, jun 91
power control in system design: 2, oct 91
public service (ke3z): 2, jan 92
request for comments: 2, may 91
spotlight on the 13-cm band: 2, jul 91
you can't win if you don't play: 2, aug 91
10th cnc notables: 2, nov 91

educational

arrl 10th computer networking conference: 17, jul 9
call for papers for amsat-na technical symposium and
    educational workshop: 7, sep 91
call for papers-25th central states vhf society conference: 17, may 91
conference proceedings-amsat/na ninth space symposium and
    amsat/arrl educational workshop 17, nov 91
high schools and amateur radio team up to support vlf shuttle
    research: 21, dec 91
international phase iii d satellite program: 21, aug 91
microwave update 1991: 17, may 91; 17, jul 91; 21, aug 91; 17, 0ct 91
sarex update:6, apr 91
software service: 21, apr 91
6th annual satellite colloquium: 6, mar 91; 16, jun 91
7th annual eastern vhf/uhf/shf conference 21, apr 91
25th central states vhf society conference: 17, jul 91

miscellaneous

an audio cw notch filter for home brewing (mita): 4, sep 91
automated sarex communication (smitt): 3, apr 91
a different weave of ssb exciter (anderson): 3, aug 91
ea-88 ibm pc radio interface (miletic): 13, jun 91
index to qex march 1991 to february 1992 (volumes 109-120): 18, feb 92
maxwell without tears - a fresh look at his infamous equations
    (shuch): 6, jan 92
measuring the mass of the earth - the ultimate moonbounce experiment
    (shuch): 8, sep 91; corrigendum: 14, jan 92
microwave update ྗ: 11, jan 92
the oz1hwo 144-148 mhz pocket fm receiver (tolstrup): 7, apr 91
power supply for gaas fet amplifier (lau): 10, mar 91
the series regulator power supply - a closer look (sabin): 3, may 91
simple crystal filters (parrot): 10, may 91

new products

computer program designs, simulates, and optimizes
    high-efficiency (class e) rf power amplifiers (hepaplus): 21, apr 91
logic tutor: 21, apr 91

specialized communications techniques

amc - the amtor controller (bingemer): 3, feb 92
direct digital synthesis - what is it and how can i use it? (saul): 7, mar 91
a microcontroller based multimode reader (haynal): 3, jun 91
an optical, through-the-air, digital communication modem
    part 1 of 2 (foltzer): 3, nov 91
an optical, through-the-air, digital communication modem
    part 2 of 2 (foltzer): 3, dec 91
a new dsp for packet (albert): 3, jan 92
pactor_radioteletype with memory arq and data compression
    (helfer/strate): 3, oct 91
psk anyone? (reed): 3, jul 91
ptc - the pactor controller (cias/mack): 7, oct 91
tcp/ip command set reference (wade): 3, mar 91
voice mailbox at the uhf/vhf conference in weinheim (cq-dl): 8,
dec 91

vhf+ technology (krauss)

changing the contest rules, revisited: 13, apr 91
high-temperature superconductors (hts): 14, apr 91
mid-year notes: 11, jul 91
miscellaneous thoughts: 13, aug 91
more thoughts on 135 cm: 12, oct 91
remember - no use of 220-222 mhz: 13, aug 91
rotating towers for vhf+ antennas: 12, oct 91
year-end house-cleaning: 16, jan 92

gateway

applications

aa4re bbs version 2.11 available: 17, apr 91
apple-amateur radio users group formed: 21 may 91
capra information packet available: 19, mar 91
dc area 900-mhz packet-radio backbone: 19, dec 91
illinois ip address coordinator: 17, apr 91
ip address coordinator list: 14, nov 91
landline doorway to packet radio: 16, feb 92
metcon-1 now available: 16, oct 91
norway packet-radio status report; 12, sep 91
pacsats move traffic worldwide: 13, nov 91
pactor bibliography: 22, jan 92
remote linked message/data distribution system: 18, aug 91
a snapshot of an evolving nts: 16, feb 92
southern new jersey packet-radio group formed: 13, nov 91
tapr dsp hardware update: 18, jun 91
tapr deviation meter planned: 19, jan 92
tapr metcon-1 beta-test kits available: 18, jun 91
tapr metcon-1 status report: 18, jan 92
tapr packet radio status: 18, jun 91
us and ussr amateurs to coordinate emergency packet-radio
    communications: 15, oct 91
wxn packet weather server node available: 18, jan 92
"who hears me?" command proposal: 19, dec 91
worldwide list of aplink stations: 18, apr 91

commercial products

aea releases pk-232 and pc-pakratt 11 upgrades: 12, sep 91
ieee packet-radio articles: 19, aug 91
new edition of the arrl operating manual covers packet radio and
    satellite communications: 19, jan 92
new products available from aea: 19, jan 92

miscellaneous

amsat-na annual meeting and symposium: 13, jul 91
amsat-na annual meeting, symposium and educational workshop: 16, oct 91
amsat-na 9th annual meeting and space symposium successful: 20, jan 92
amsat-uk colloquium highlights: 13, sep 91
arrl 220-mhz band plan: 15, oct 91
arrl seeks access to 216-220 mhz for packet-radio links: 15, aug 91
dsp dreamland at dayton: 17, jun 91
dsp q&a: 12, nov 91
dayton in april: 17, apr 91
disaster communications via packet radio in south-east asia: 15, feb 92
fcc and ["the pbbs eleven": 19, jun 91
fcc cites pbbs business communications: 16, mar 91
fcc grants final extension of unattended hf operation sta: 15, feb 92
input for new 222-225 mhz band plan sought: 16, mar 91
kuwait aplinked during iraqi occupation: 16, apr 91
hams "kuwait connection" revealed: 21, may 91
midwest packet radio conference scheduled: 20, jan 92
nts embraces digital systems: 19, jun 91
radio recommendation: 19, dec 91
sixth annual amsat-uk colloquium scheduled: 18, apr 91
stray bits (aea ships dsp-2232; new w1aw bulletin header proposed;
    amsat-belgium not associated with sara; rsgb ceases publication
    of packet-radio newsletter; hamman v1.01 available): 17, feb 92
tapr annual meeting highlights: 21, may 91
tapr annual meeting on tap for march 7-8: 15, feb 92
tenth anniversary focus of tapr annual meeting plans: 17, dec 91
thoughts on bbs authentication: 13, jul 91
1992 starts off with january: 22, jan 92

networking

arrl computer networking conference: 16, aug 91
call for papers - computer networking conference: 19, may 91
cardinal card ready to fly: 16, apr 91
colorado packet news: 21, jan 92
home is where your tnc is...: 18, mar 91
hubmaster and intermediate-speed network development status
    report: 19, may 91
nms live!: 16, apr 91
proceedings of the 10th arrl computer networking conference: 15, oct 91
region 3 adopts packet-radio guidelines: 17, dec 91
san francisco to be site of 10th arrl computer networking
    conference: 16, mar 91
the yu3 23-cm 38,4000-bit/s packet-radio network: 20, jun 91
the 4x1ru hf-vhf gateway/pbbs statistics: 22, may 91

satellites and spacecraft

austrian cosmonaut to operate from mir in fall: 12, sep 91
austrian ham aboard mir: 12, nov 91
gb1mir/u to operate from mir: 19, jun 91
lo-19 pbbs operational soon: 17, mar 91
mm now a "multi/multi": 18, jan 92
pacsat message traffic gateways expanded: 18, jan 92
pacsats move traffic worldwide: 13, nov.
recovery of ao-21 rudak continues: 19, dec 91
rudak 2 launched: 16, mar 91
sara - a french amateur radio telescope: 15, dec 91
sts-37 sarex mission overview: 20, may 91
space station packet radio operational: 16, mar 91
u0-22 launched: 11, sep 91
u2mir bids farewell and u5mir wants to know "what's up?": 13, jul 91

software/firmware/hardware

aa4re bbs version 2.11 available: 17, apr 91
aea releases pk-232 and pc-pakratt ii upgrades: 12, sep 91
latest packet-radio software releases: 22, may 91
latest packet-radio software releases: 16, jul 91
macintosh system 7 hits amateur radio: 14, nov 91
metcon-1 now available: 16, oct 91
new packet-radio software available: 17, mar 91
new packet-radio software available: 18, apr 91
new packet-radio software available: 15, oct 91
nosview for dos: 13, nov 91
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qex index march 1992 february 1993 qex (volumes 121-132)

components (forbes)

3-mm trimmer potentiometers: 10, may 92
3-v dual op-amp: 17, jan 93
caddock power resistors: 10, may 92
circuit simulation software: 20, nov 92
connectors: 20, nov 92
design automation hepa-plus: 17, jan 93
emi filters: 20, nov 92
electrolytic capacitors: 18, aug 92
high-power voltage regulators: 10, may 92
in-rush current limiters: 17, jan 93
integrated low-pass filter: 10, may 92
microlinear power control ic: 18, aug 92
miniature fuses: 20, nov 92
multichip modules (mcms): 18, aug 92
new rf connectors: 17, jan 93
rf design book: 21, nov 92
sensor interface ic: 20, nov 92
sprague-goodman high-voltage trimmer capacitors: 10, may 92

correspondence

ascii over amtor (poor): 18, nov 92
antenna hints (lamb): 12, may 92
coherent cw group (lumb): 14, may 92
getting involved (hutchens): 13, may 92
new oscar to be launched in july ྘ (kitsat): 14, jun 92
an outlet for amateurs/experimenters (thompson): 19, nov 92
sara telemetry quest: 18, mar 92
series-pass power supply suggestions (hornbostel): 14, may
"weekdate" world standard for software release dates (wade): 13, may 92

corrigendum/feedback

ea-88 ibm pc radio interface (miletic, jun 91): 9, may 92
a new dsp for packet (albert, jan 92): 9, mar 92
maxwell without tears (shuch, jan 92): 9, mar 92
synchronous detection of am signals (gruber, sep 92): 21, nov 92
synchronous detection of am signals (gruber, sep 92): 15, dec 92

digital communications (price)

bbs forwarding on hf: 20, dec 92
new column-old columnist: 20, dec 92
things you should know in 1993: 14, feb 93

editorials

algorithms (bloom): 2, oct 92
cdma spread spectrum sta (rinaldo): 2, jun 92
change and continuity at qex (bloom): 2, aug 92
emi (bloom): 2, feb 93
a farewell to "gateway" (bloom): 2, dec 92
hf data communications advances (rinaldo): 2, may 92
help! celp! (bloom): 2, nov 92
low-cost development tools (bloom): 2, jan 93
phase 3d designers meet in marburg (rinaldo): 2 jul 92
rubbing shoulders (rinaldo): 2, mar 92
tapr at ten (bloom): 2, apr 92
taking (un)attendance (bloom): 2, sep 92

miscellaneous

11th networking conference and dsp course: 24, oct 92
18th annual eastern vhf/uhf/shf conference: 19, apr
18th annual eastern vhf/uhf/shf conference: 8, may
amsat annual meeting and space symposium: 17, aug 92
award nominations (arrl atlantic division convention): 18, mar 92
award nominations (1993 arrl atlantic division convention): 19, feb 93
circuit search data base: 23, aug 92
central states vhf society: call for papers: 21, jan 93
eepal: 23, aug 92
fcc streamlines experimental license procedures: 18, apr 92
instanttrack 1.00 patch available: 23, aug 92
microwave update ྙ: 21, jan 93
personal radio instrumentation catalog: 23, aug 92
qex index march 1992-february 1993: 20, feb 93
tapr 1993 annual meeting: 19, feb 93

miscellaneous technical

a 1.8 to 54 mhz 5-watt amplifier (lau): 7, may 92
a 2k x 8-bit rom emulator (lichtenstein/nemec): 3, jan 93
the 4x3x5 filter - revisited (jansson): 17, sep 92
an audio peak filter with noise reduction effect for cw
    reception (mita): 9, dec 92
demonstrating celestial mechanics through measured
    doppler shift (shuch): 3, apr 92
developing software for dsp (albert/torgrim): 3, oct 92
digital filter for eme applications (dell'immagine): 3, may 92
field-strength indicators (wells): 10, mar 92
improved mechanical design for the helical antenna (lile): 13, jan 93
lightning - your home and ham gear (gurske): 7, oct 92
the magic of digital filtering (morrison): 3, feb 93
making meters with chips (ulbing): 9, feb 93
a multi-mode computer/radio interface (vandiver): 8, nov 92
pc.doc (higgins): 3, aug 92
reflections on the reflection coefficient: an intuitive
    examination (hayward): 10, jan 93
synchronous detection of am signals (gruber): 9, sep
92; correction: 21, nov 92; feedback: 15, dec 92
t/r switching low-power 903 and 1296 transverters (lau): 16, jul 92
transmitter noise loading (white): 3, mar 92
twin-bridge power supply (connole): 3 dec 92
using the lms algorithm for qrm and qrn reduction
    (reyer/hershberger): 3, sep 92

new books/products

from mcgraw-hill electronic packaging and interconnection
    handbook: 20, may 92
from mcgraw-hill handbook of applied mathematics for engineers
    and scientists: 20 may 92
from mcgraw-hill lenk's audio handbook: operation and
    troubleshooting: 20, may 92
from mcgraw-hill - lenk's laser handbook: featuring cd, cdv, and
    cd-rom technology: 20, may 92
new helix antenna design (ieee): 23, jul 92
new products from kantronics host master ii: 24, jun 92
new products from kantronics kam 4.0: 24, jun 92
radio auroras from rsgb: 24, jun 92

rf (lau)

coherent cw experimenters need help: 17, feb 93
conjugate matching of nonlinear amplifiers: 16, feb 93
designing cavity preamplifiers: 17, feb 93
portable microwave system design: 19, oct 92
powering the equipment: 19, oct 92
protecting gaas fets: 10, aug 92
the quest for 1 db nf on 10 ghz: 16, dec 92
switching regulators: 10, aug 92
transverter dynamic range - how good is good enough?: 10, aug 92
transverter topologies: 9 aug 92
the weather: 19, oct 92
welcome to rf: 9, aug 92
wideband microwave antennas: 9, aug 92

specialized communications techniques

connecting two modems to one transceiver (kaelin): 7, mar 92
meteor scatter experiments using packet at 144 mhz (zollo): 8, apr 92
the new age of amateur television: amateur digital video (champa): 3, nov 92
the status and future of high frequency digital communication,
    part 1 (wickwire): 3, jun 92
the status and future of high frequency digital communication,
    part 2 (wickwire): 3, jul 92
the status and future of high frequency digital communication,
    part 3 (wickwire): 12, aug 92
the status and future of high frequency digital communication,
    part 4 (wickwire): 10, oct 92
the video experimenter (glass): 13, dec 92

vhf+ technology (krauss)

low-cost hemt devices: 20, sep 92
june ྘ vhf contest results - discussion: 18, jan 93
new goodies to try: 21, oct 92
the radial line stub: 19, jan 93
rohm rhf1204 sources: 18, jan 93

gateway

applications

automating the wa0ptv satellite gateway: 15, may 92
clover development continues: 12, mar 92
the coherent-packet-internet-uucp link: 23, oct 92
ip address coordinator list: 16, mar 92
station automation improved by new pb and pg: 14, apr 92

commercial products

adaptive 9600-bit/s modem added to dsp-12: 24, sep 92
new tapr kits introduced: 17, may 92
next year, i'll fly to dayton - a look at what's new or coming
soon on
    the amateur digital front: 17, june 92
single-port dsp multi-mode controller released: 24, sep 92

miscellaneous

amsat-uk 7th annual colloquium starts july 30: 18, jul 92
arrl board recommends creation of unattended digital stations: 23, sep 92
arrl board to reconsider hf packet proposal: 23, oct 92
arrl computer networking conference november 7: 18, jul 92
automatic hf digital forwarding recommended: 22, nov 92
bound for 8-land: 17, mar 92
dove telemetry studied in classrooms: 13, apr 92
digital committee presents recommendations for hf digital
    communications: 19, aug 92
kenwood ts-450s grounded: 19, may 92
modifying commercial radios for speed: 13, apr 92
region 2 adopts digital band plan: 22, nov 92
tapr news: 15, mar 92

networking

development of california state packet radio network continues: 12, apr 92
first uk 10-meter packet-radio beacon on the air: 15, mar 92
follow-up to "development of california state packet radio network
    continues": 20, jun 92
rose directory in the works: 16, apr 92
the wb3ffv amateur radio telephone bbs: 21, aug 92

satellites and spacecraft

automating the wa0ptv satellite gateway: 15, may 92
correction - new packet-radio satellite survey: 22, jul 92
do you receive uosat-oscar-11 bulletins?: 16, apr 92
everything you always wanted to know about satellite frequencies: 15, apr 92
hams moved from u0-14 to u0-22: 14, mar 92
kitsat-oscar-23 is born!: 23, oct 92
mir/sarex news: 12, apr 92
medical image relayed via ao-16 and u0-14: 15, mar 92
new microsat expected this year: 24, oct 92
sts-47 sarex is successful: 23, nov 92
survey for new packet-radio satellite: 17, apr 92
tlmdc with new dove telemetry processing available: 16, mar 92

software/firmware/hardware

aea dsp-2232 update: 18, jun 92
aa4re bbs version 2.12 available: 17, may 92
disclaimer: 21, jun 92
f6fbb pbbs 5.14 released: 18, may 92
kantronics version 5.0 firmware released: 15, mar 92
logging software supports packet-radio cluster
spotting: 19, aug 92
macs kiss-off tncs with softkiss: 19, aug 92
nos intro: 18, jul 92
new macintosh packet program released: 17, may 92
new tnc 2 firmware available: 18, jun 92
new tnc 2 firmware has satellite kiss patch: 23, nov 92
new packet-radio software for amiga computers: 19, aug 92
new packet-radio software available: apple macintosh software: 20, aug 92
commodore amiga software: 20, aug 92
ibm pc software: 20, aug 92
tnc firmware: 21, aug 92
trs-80 model 4 software: 21, aug 92
tlmdc with new dove telemetry processing available: 16, mar 92
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qex index march 1993-december 1993 (volumes 133-142)

correspondence

better iron-on pc patterns (elmore): 21, jun 93
tcp/ip for networking (gallaher): 20, jun 93
windows standards (new): 20, jun 93

digital communications (price)

audio spectrum analyzers - cheap!: 13, dec 93
correction for grapes address: 15, dec 93
embedded processors made easy: 20, aug 93
forward error correction: 17, jun 93
forward error correction ii - the preview: 15, dec 93
high-speed modems (66 kbps; 430-mhz): 30, oct 93
jihad!: 23, apr 93
ka9q on fec: 17, jun 93
mail bag: 23, apr 93; 22, aug 93
more on computer control: 19, jun 93
we're still doing it wrong: 23, apr 93
windows: 19, jun 93

editorials (bloom)

ale to the fore: 2, jul 93
in conference: 2, oct 93
the iron is hot: 2, may 93
making pc boards easier: 2, sep 93
nonamateur packet connection: 2, aug 93
our new look: 2, jun 93
the right tool for the job: 2, apr 93
tales from the crypt-o: 2, nov 93
what i want for christmas: 2, dec 93
why write?: 2, mar 93

miscellaneous

arrl atlantic division "technical achievement" award 24, aug 93
g x index march 1993-december 1993: 18, dec 93
book review: mcgraw-hill circuit encyclopedia and
troubleshooting guide, volume i (hare): 16, dec 93

miscellaneous technical

a 12-ghz, 1/8 prescaler (vilaseca and riviere): 20, sep 93
an 8085-based computer system (ulbing): 3, nov 93
all about phase noise in oscillators, part 1 (rohde): 3, dec 93
basic digital filters (ward): 7, aug 93
birth of a 7-mhz transceiver (lau): 3, mar 93
broadband dipole and unipole 3.5-to-4 0-mhz antennas (fallis): 15, aug 93
the dtmf deluxe (pasler): 15, jul 93
differences between tube-based and solid state based receiver systems and
    their evaluation using cad (rohde): 3, mar 93
a different weave of ssb receiver (anderson): 3, sep 93
a dip meter with digital display (cicchinelli): 19, oct 93
the double-diamond quad (christman): 18, mar 93
evasive noise blanking (mandelkern): 3, aug 93
joint design for yagi booms (leeson): 6, jun 93
measuring sinad using dsp (bloom): 9, jun 93
narrowband spectrum analysis with high resolution (pontius): 3 oct 93
optimizing drive levels in microwave transmitting converters
    (laag): 10, may 93
a programmer for 87c51 microcontrollers (ulbing>: 10. dec 93
simple and inexpensive pc interfacing (sutcliffe): 1Ɖ. nov 9.Ɖ
the shrike crystal oven (spencer): 20, apr 93
smoke testing for beginners-an introduction to power supply
    testing (kolts): 7, may 93
troposcatter - dx cq (rummel): 22, oct 93
troubleshooting digital circuits with the "glitch catcher"
    (sutcliffe): 14, apr 93
turn your pc into an oscilloscope (lichtenstein and nelnee): 91 jul 93
variations on a single-tuned circuit ( hayward): 3, jun 93
a weaver method ssb modulator using dsp (puig): 8, sep 93

rf (lau)

50-mw, 13-cm amplifier using the mav-11/msa-1104 mmic: 25, sep 93
561.6-to-2808 mhz multiplier: 15, may 93
the 561.6-mhz local oscillator: 15, may 93
2808-to-5616-mhz doubler: 17, may 93
a 5616-mhz local oscillator: 15, may 93
central states vhf conference comments: 23, sep 93
designing a high-performance 13-cm preamp: 20, nov 93
a no-tune 222-mhz transverter: 24, jul 93
a no-tune driver for 432 mhz: 21, mar 93

specialized communications techniques

all g3ruh modems are not the same (dubke): 14, may 93
growing family of federal standards for hf radio automatic link
    establishment (ale), part i (adair, peach and bodson): 2, jul 93
growing family of federal standards for hf radio automatic link
    establishment (ale), part ii (wortendyke, riddle and bodson): 9, aug 93
growing family of federal standards for hf radio automatic link
    establishment (ale), part iii (brewster and bodson): 14, sep 93
growing family of federal standards for hf radio automatic link
    establishment (ale), part iv (sutherland and bodson): 13, oct 93
growing family of federal standards for hf radio automatic link
    establishment (ale), part v (smith and bodson): 9, nov 93
growing family of federal standards for hf radio automatic link
    establishment (ale), part vi (redding and bodson): 7, dec 93
slow scan tv with the sound blaster (harlan): 3, may 93

upcoming technical conferences

1993 west coast vhf/uhf conference: 25, mar 93; 20, may 93
amsat-na 1993 annual meeting and space symposium: 26, sep 93
arrl conference on digital communications: 25, mar 93; 26, sep 93
central states vhf society, call for papers: 25, mar 93; 20, may 93
microwave update ྙ: 20, may 93; 26, sep 93
mid atlantic vhf conference: 26, sep 93
radio amateurs of/du canada-first national convention: 26, sep
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qex index january 1994-december 1994 (volumes 143 through 154)

book/software reviews

cellular radio principles and design (macario, mcgraw-hill inc)
  (schetgen); 32, mar 94
digital signal processing in communication systems (frerking,
  van nostrand reinhold) (nagurney); 26, dec 94
electronics pocket reference, second edition (pasahow,
  mcgraw-hill, inc) (wolfgang); 30, apr 94
mcgraw-hill circuit encyclopedia and troubleshooting guide,
  volume ii (lenk, mcgraw-hill, inc) (hare); 31, jun 94
syscalc for windows, version 1.06a (arden technologies) (newkirk);
  25, may 94


digital communications (price)

the amateur's toolbox; 2, jul 94
archie; 32, feb 94
are you being served?; 26, jun 94
best laid plans...; 31, feb 94
buyer's guide?; 23, dec 94
computer networking conference proceedings; 27, oct 94
dayton; 28, jun 94
deep dark depression, excessive misery; 30, aug 94
doom - 2400-mhz prospects; 24, dec 94
gps; 28, jun 94
gloom iii; 21, dec 94
low(er) cost 900 mhz?; 25, dec 94
mailbox; 27, oct 94
meteor bounce; 28, jun 94
misery loves company; 27, oct 94
more audio analyzers; 32, feb 94
the next big project; 27, jun 94
packet history; 23, dec 94
peaked?; 24, dec 94
real world; 27, oct 94
two chickens in every pot; 22, dec 94


editorials (bloom)

219 mhz; 2, feb 94
arrl technical workshops; 2, sep 94
depressing isn't the word; 2, aug 94
hf digital protocols; 2, may 94
how technical is "too technical"; 2, jan 94
let us compute; 2, jun 94
more on hf simulators; 2, dec 94
our new internet connection; 2, jan 94
overseas qex for less; 2, dec 94
qex too technical? nah!; 3, mar 94
second class is first class (compared to third class); 2, jan 94
tapr looks forward; 2 apr 94
tooling up for rf; 2, oct 94
a virtual ionosphere; 2, nov 94
virus; 31, aug 94


feedback to previous articles

an 8085-based computer system, nov 93; 30, jun 94


miscellaneous technical

1994 index; 28, dec 94
5760 mhz from the junkbox (cook); 20, may 94; feedback, 32, oct 94
all about phase noise in oscillators - part 2 (rohde); 9, jan 94
all about phase noise in oscillators - part 3 (rohde); 15, feb 94
a better a/d and software for the ddc-based receiver (anderson);
  11, nov 94
building enclosures for microwave circuits (healy); 15, jun 94
building vhf power attenuators (wade); 28, apr 94
cad tricks for projects and prototypes (sutcliffe); 24, mar 94
characteristics of r-c impedance bridges (tilley); 9, mar 94
a comprehensive antenna analyzer (tilley); 3, aug 94
dsp voice frequency compandor for use in rf communications
  (ash, christensen and frohne); 5, jul 94; feedback; 32, oct 94
designing low-phase-noise oscillators (rohde); 3, oct 94
digital processing of weak signals buried in noise (emerson);
  17, jan 94
estimating the length of coaxial feeder (brown); 24, apr 94
hf channel simulator tests of clover (reynolds); 7, dec 94
hearing strange uhf signals lately? (reed); 13, dec 94
inexpensive pc a-to-d (sutcliffe); 23, oct 94
a low-distortion test oscillator and amplifier (eguizabal); 27, mar 94
the mtg1 multitone test generator (rohde); 3, dec 94
the multipurpose morse code generator circuit (ciarallo); 3, feb 94;
  feedback; 16, apr 94
on the traveling-wave linear dipole (belrose); 22, jun 94
negative frequencies and complex signals (bloom); 22, sep 94
personal computer frequency counter (nemec); 3, jan 94
phase-shift network analysis and optimization (schmidt); 17, apr 94
practical microwave antennas - part 1 (wade); 3, sep 94
practical microwave antennas - part 2 (wade); 13, oct 94
practical microwave antennas - part 3 (wade); 16, nov 94
programming a dsp sound card for amateur radio (forrer); 9, aug 94
rf counter data collection and visualization (mork); 11, jul 94
a simple junkbox satellite receiver (reed); 3, apr 94
a simple ssb receiver using a digital down converter (anderson);
  17, mar 94
a simple versatile uhf test source - 0.4 to 1.5 ghz (reed);
  18, jun 94
simulation of kh6cp's vhf driver (rohde); 11, jun 94
a swept-frequency generator for crystal-filter evaluation
  (henderson); 3, mar 94
testing and calculating intermodulation distortion in receivers
  (rohde); 3, jul 94; feedback; 27, dec 94
where does the power go? (bloom); 17, dec 94


proceedings

13th arrl digital communications conference proceedings; 31, oct 94
central states vhf society conference proceedings; 30, oct 94
microwave update 1994 proceedings; 31, oct 94
proceedings of the amsat-na 12th space symposium and amsat annual
  meeting; 27, dec 94
proceedings of the twentieth eastern vhf/uhf conference of the
  eastern vhf/uhf society; 30, oct 94


rf (lau)

a 2-w 13-cm amplifier; 27, may 94
10-ghz wbfm - improved designs; 25, nov 94
designing a 2-meter power amplifier; 26, jan 94
a low-noise phemt amplifier for 5760 mhz; 28, sep 94
mode-s receive converter; 25, july 94; feedback; 31, sep 94
a vhf driver for hybrid power modules; 29, mar 94


specialized communications techniques

an-93, and hf modem for rtty, amtor and pactor software tncs
  (forrer); 3, may 94
an adaptive hf dsp modem for 100 and 200 baud (forrer); 3, nov 94
a cvsd codec system for your pc (bloom); 11, apr 94; feedback;
  30, jun 94
a dsp version of coherent-cw (ccw) (de carle); 25, feb 94
interfacing gps or loran devices to packet radio (bruninga);
  9, feb 94
g-tor: a hybrid arq protocol for narrow bandwidth hf data
  communication (prescott, anderson, huslig and medcalf);
  12, may 94
the kd2bd pacsat modem (magliacane); 20, aug 94
toward new link-layer protocols (karn); 3, jun 94
wavelet compression for image transmission through bandlimited
  channels (langi and kinsner); 12, sep 94


upcoming technical conferences

the 1994 amsat-na annual meeting and space symposium; 32, aug 94;
  30, oct 94
1994 arrl conference on digital communications; 29, jan 94;
  31 mar 94; 29, jun 94; 32, aug 94
arrl continuing education workshop: computer-aided design of hf
  antennas; 30, oct 94
central states vhf conference; 29, jan 94; 31, mar 94; 29, jun 94
eastern states vhf conference; 29, jan 94; 31, mar 94, 30, jun 94;
  32, aug 94
hamvention ྚ 31, mar 94
microwave update ྚ 29, jan 94; 31, mar 94; 29, jun 94; 32, aug 94
pack rats conference; 29, jan 94; 31, mar 94, 30, jun 94; 32, aug 94
radio amateurs of/du canada - first national convention; 31, mar 94;
  29, jun 94
west coast vhf conference; 29, jan 94; 31, mar 94
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1995 index
january 1995 to december 1995 qex (issues 155 through 166)
all dates are 1995 unless otherwise indicated.

digital communications (price)

amateur equipment prices via the www: aug, 24
book of linux_chapter 1, the: apr, 18
hardware interface for software people, a: aug, 21
little grumping, a: feb, 28
omnidirectional antennas: aug, 24
p3d: feb, 24
phase 3d showcase in orlando: oct, 23
recharging the batteries: oct, 23
spread spectrum: it's not just for breakfast any more!: jun,22
tanstaafl: feb, 25
tanstaafl from nk6k: jun, 27
where everybody knows your name: feb, 24
who watches the watchers?: feb, 27

empirically speaking (bloom)

arrl electronic sources: nov, 2
amsat's phase iiid satellite: jan, 2
dos versus windows: oct, 2
dsp tools abound: aug, 2
dsp versus gp: sep, 2
electronic qex?: dec, 2
get the net: feb, 2
getcha red hot info!: jun, 2
hf automation arrives: may, 2
incredible latemess of qex, the: jul, 3
licensed to experiment: mar, 2
linux rules: apr, 2
need technical information?: nov, 2
summertime and the living is...hot!: jul, 2

feedback

dynamic resistance in rf design (september 1995): dec, 29
effect of local terrain on hf launch angles, the (july 1995): aug, 13
graphic method for calculating z (may 1995): nov, 12
simple frequency deviation meter using time-domain techniques, a
(aug 1995): nov, 12
torque capacity of keyed rotator shafts (june 1995): jul, 29

miscellaneous technical

1995 index: dec, 28
band-stop filters for attenuating high-level broadcast-band signals
(wetherhold): nov, 3
designing and building high-performance crystal laddler filters
(makhinson): jan, 3
designing the toroid transformer for the directional coupler
(sabin): may, 9
dual mixer for 5760 mhz with filter and amplifier, a (wade): aug, 9
dynamic resistance in rf design (sabin): sep, 13; feedback: dec, 29
effect of local terrain on hf launch angles, the (straw): jul, 3;
feedback: aug, 13
effects of the ionosphere (d'avignon): jan, 23
electronic antenna switching (hayward): may, 3
filters (makhinson): jan, 3
g3uur method for measuring quartz crystal motional parameters
(sidebar): jun, 20
graphic method for calculating z (harwood): may, 13; feedback: nov, 12
high-performance agc system for home-brew transceivers, a
(mandelkern): oct, 12
high-performance antennas for 5760 mhz (wade): jan, 18
homebrewing black-box style (duff): nov, 13
lumped-element directional coupler (sabin): mar, 3
measuring system response with dsp (bloom): feb, 11
microprocessor controlled multiband transceiver, (ahrens and gray): dec, 3
modification of tvro lnbs for 10 ghz (wade and twombly): apr, 3
modular, high-performance 5.76-ghz transverter, a (healy): mar, 13
more on parabolic dish antennas (wade): dec, 14
phemt preamp for 13 cm (bertelsmeier): oct, 7
phemt preamp for 9 cm (bertelsmeier): dec, 23
pic based repeater ider, a (sutcliffe): oct, 3
polyphase network calculation using a vector analysis method
(yoshida): jun, 9
precision two-tone rf generator for imd measurements, a (rumley): apr, 6
refinements in crystal ladder filter design (hayward): jun, 16
simple cw demodulator for the ddc-based receiver, a (anderson): feb, 6
simple frequency deviation meter using time-domain techniques, a
(isley): aug, 3; feedback: nov, 12
spectral measurements the hard way (reed): jul, 16
terminiation insensitive amplifier, a (makhinson): jul, 21
torque capacity of keyed rotator shafts (leeson): jun, 3; feedback: jul, 29
uhf+ vswr bridge, a (wade): feb, 3
up to four receivers on a single antenna (lass): apr, 13
using the motorola dsp56002evm for amateur radio dsp projects
(forrer): aug, 14
variable if selectivity unit, a (thomson): nov, 21

miscellaneous

conference proceedings: aug, 25; oct, 26
free spice nesletter previews new simulaiton techniques: may, 22

rf (lau)

6-meter transverter design: sep, 24
10-ghz sma to wr-90 transition: nov, 24
1296-mhz cavity preamplifier, a: jan, 26
calculating the power limit of circuits with toroids: mar, 24
designing vhf+ yagis: may, 17
running qrp in the arrl and cq vhf contests: may, 20

specialized communications techniques

hrpt the easy way (emiliani, righini and rossini): sep, 3
measuring 9600-baud radio ber performance (bloom): mar 16
principles of hf radio direction finding loops, the (brown): sep, 19

upcoming technical conferences

amsat annual meeting and space symposium, 1995: may, 21; jun, 28;
jul, 29; aug, 13
arrl digital communications conference, 1995: mar 23; apr, 12; may, 21;
jun, 28; jul, 29; aug, 13
central states vhf society conference, 1995: apr, 12; may, 21; jun, 20
central states vhf society conference, 1996: nov, 12
eastern vhf/uhf society conference, 1995: jun, 28; jul, 29
microwave update `95: mar 23; apr, 12; may, 21; jun, 28; jul, 29; aug, 13
west coast vhf/uhf conference, 1995: mar 23; apr, 12
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1996 qex index

january 1996 to december 1996 qex (issues 167 through 178)
all dates are 1996 unless otherwise indicated.

conference proceedings available

amsat-na space symposium and annual meeting (1996): oct, 19
arrl and tapr digital communications conference (15th annual, 1996):
  sep, 21
central states vhf society conference [30th annual, 1996]: aug, 25
eastern vfh/uhf conference [22nd annual, 1996]: aug, 26
microwave update 1996: sep, 22

empirically speaking (bloom)

bigger: not always better: mar, 2
cyberham caters to the computered ham: aug, 2
device data via the web: jan, 2
electronic arrl, the: oct, 2
electronic qex: who cares?: feb, 2
even paranoids have enemies: aug, 2
hf simulator for amateurs, an: sep, 2
math anxiety: jul, 2
mea culpa: oct, 2
north american digital systems directory, the: dec, 2
our visit to the pack rats: apr, 2
periodicals at your fingertips: may, 2
protecting the spectrum: jun, 2
rf exposure and the experimenter (hare): nov, 2
rfi help from the fcc: apr, 2
system modeling and simulation tool, a: jun, 2
vhf and up, anyone?: may, 2
what's in those conference proceedings?: jun, 2

feedback

better and simpler a/d for the ddc-based receiver, a (anderson) [august
  1996]: oct, 18
the impedance of square coax cable (rf: designing vhf+ yagis) (lau) [may
  1995]: oct, 18
our apologies to mr. wein (designing a wein-bridge oscillator) (cope)
  [march 1996]: jul, 25
a practical approach to computerized control of stepper motors and relays
  (pierce) [october 1996]: dec, 24
variable if selectivity unit, a (thompson) [november 1995]: feb, 31

miscellaneous technical

better and simpler a/d for the ddc-based receiver, a (anderson): aug, 21;
  feedback: oct, 18
calculation of parabolic reflector aperture efficiency (sidebar to dipole-
  reflector parabolic dish feeds for f/d of 0.24 to 0.4): feb, 10
calibrating k to nec (cebik): mar, 3
capacitance hats for hf mobile antennas (griffith): aug, 16
computer modeling of coax cable circuits (sabin): aug, 3
correcting for reflections in antenna gain measurements (sidebar to dipole-
  reflector parabolic dish feeds for f/d of 0.24 to 0.4): feb, 8
complete dsp design example using fir filters, a (wiseman): jul, 3
copper wire gauge for electrical technology, the (eguizabal): jul, 21
correlation of sampled signals (bloom): feb, 24
dsp-based audio signal processor, a (forrer): sep, 8
designing a wein-bridge oscillator (cope): mar, 9; feedback: jul, 25
design notes for ra luxury linears amplifier (mandelkern): nov, 13
development system for the 8051 microcontroller, a (marchese): dec, 18
dipole-reflector parabolic dish feeds for f/d of 0.24 to 0.4 (larkin):
  feb, 3
enhance miniature construction with optical feedback (sidebar to noise
  measurement and generation): nov, 11
estimating t-network losses at 80 and 160 meters (schmidt): jul, 16
finding the characteristics of arbitrary transmission lines (kirkby):
  dec, 3
rfool-resistants sequenced controller and if switch for microwave
  transverters, a (wade): may, 14
frequency stabilization of l-c oscillators (spaargaren): feb, 19
high-performance triband beam with no traps, a (fenwick): sep, 3
homebrew 2-m repeater, a (crago): feb, 12
isdn: the new legal limit (parry): oct, 11
ki6qp dual synthesizer module, the (rumley): jan, 3
luxury linear, a (mandelkern): may, 3
mechanical filter in hf receiver design, the (sabin): mar, 14
noise measurement and generation (wade): nov, 3
pack rat notes: 3456-mhz isolator/circulator (mascaro): apr, 22
pack rat notes: cheap microwave detector (sortor): apr, 21
pack rat notes: driving that solid state amplifier (mascaro): apr, 20
pack rat notes: hybrid power splitters (steer): apr, 22
pack rat notes: if switching (eitchner): apr, 23
pack rat notes: a microwave rf power monitor (mascaro): apr, 21
pack rat notes: more pipe cap mania (sortor): apr, 24
pack rat notes: the strength of masts (comly): apr, 20
pack rat notes: temperature compensation for crystals (mascro): apr, 24
phemt preamp for 6 cm (bertelsmeier): mar, 21
practical approach to computerized control of stepper motors and relays, a
  (pierce): oct, 3; feedback: dec, 24
simple cw transmit vfo for the dcc-based receiver (anderson): jan, 20
simple skywave frequency calibration approaching one part-per-billion
  (bain): jun, 19
simple t/r sequencer, a (lau): oct, 15
spectral subtraction for eliminating noise from speech (hall): apr, 17
swept receiver dynamic range testing in the arrl laboratory (hare): jun, 3
testing rechargeable alkaline batteriesqand more (hare and gruber): apr, 3
transformer coupling for mechanical filters (sidebar to mechanical filter
  in hf receiver design, the): mar, 18
ultimate vfo, the (kirk): apr, 13

miscellaneous

circulation statement: sep, 22

rf (lau)

2-meter no-tune transverter: why not?, a: may, 23
2.3 ghz preamp project, a: mar, 27
3456-mhztransverter: sep, 14
building a 6-cm transverter: jun, 23
figuring out the range of matching networks: jan, 26
mounting rf connectors: nov, 21
vhf+ preamp design technology update, a: mar, 25

specialized communications techniques

on-air measurements of hf tor and packet throughput over long-distance
  skywave paths (wickwire): jun, 13
on-air measurements of hf throughput over
nvis paths using the ka9q tcp/ip (wickwire): dec, 11
packet voice communication system, a (dogruoz, lopez, samra and weldy):
  aug,11

upcoming technical conferences

amsat-na space symposium and annual meeting, 1996: jun, 32; jul, 25;
  sep, 23
arrl and tapr digital communications conference, 1996: feb, 29; apr, 25;
  jun, 30; jul, 24
aurora `97: oct, 20
central states vhf society conference, 1996: feb, 29; apr, 25; jun, 30
eastern vhf/uhf conference, 1996: jun, 30; jul, 24
microwave update 1996: jul, 25
microwave update 1997: oct, 20
mid atlantic states vhf conference, 1996: jul, 25
texas packet radio society fall digital syumposium: sep, 23
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july 1997 to december 1997 qex (issues 180 through 185).
all dates are 1997 unless otherwise indicated.
(we did not publish issues from january through june 1997. )

empirically speaking

december editorial: dec, 2
inputs to the editor (severns): oct, 2
a new editor (severns): aug, 2
response to the qex restart (severns): sep, 2
things are looking up! (severns): nov, 2
we're back (bloom): jul, 2

feedback

improved ptt input circuit for "a simple t/r sequencer," (oct 96):
  jul, 23
more on "a simple t/r sequencer," (oct 96): jul, 23
"synthesizing vacuum tubes," (aug 97): nov, 14

letters to the editor

comment on "synthesizing vacuum tubes," (aug 97) (anderson): oct, 26
interest in cell phone conversions? (kastigar): nov, 29
new harris parts for ddc-based receiver (anderson): nov, 29

miscellaneous technical

the belittler (latta): nov, 22
a compact phase 3d ground station antenna system (krome): sep, 15
building a direct digital syntheses vfo (preuss): jul, 3
exploring the 1:1 current (choke) balun (sabin): jul, 12
just tune to the dip (haviland): dec, 22
loops for 80-meter dx (belrose): aug, 3
meet the vacker: the simple, stable vfo you’ve been looking for
  (meyer): jul, 8
modern digital design for the radio amateur (wiseman): dec, 3
power and protection for modern tetrodes (white): oct, 15
predicting the performance of centrifugal fans for valve cooling
  (kirkby): oct, 27
rewinding coax relays for 12 v operation (sidebar to a single-board
  transverter for 5760 mhz and phase 3d): nov, 12
a simple synchronous-am demodulator and complete schematic for the
  ddc-based receiver (anderson): sep, 3
a single-board transverter for 5760 mhz and phase 3d (wade): nov, 3
synthesizing vacuum tubes (cope): aug, 17; feedback, nov, 14
understanding the t-tuner (c-l-c) transmatch (sabin): dec, 13

miscellaneous

circulation statement: nov, 30
1997 index: dec, 32

rf (lau)

a high rf-performance 10-ghz band-pass filter: jul, 21
phase 3d--ground station antenna ideas: sep, 20
vhf lo for the kk7b 23-cm no-tune transverter: nov, 25

specialized communications techniques

hf modems and protocols: an approach to testing (riley and bodson):
  oct, 3
a software package for analyzing clover channel statistics
  (wickwire): nov, 15

upcoming technical conferences

arrl and tapr digital communications conference: jul, 24; aug, 22
central states vhf society conference: jul, 24
eastern states vhf/uhf conference: jul, 24; aug, 22
microwave update ྜྷ: jul, 24; aug, 22
southwest ohio digital symposium, dec, 21
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1998 index
issues 186 through 191
(all dates are 1998 unless otherwise indicated.)

conference proceedings

central states vhf society (1998): sep, 49
conference proceedings available: jan, 58
southeastern vhf society (1998): sep, 49

empirically speaking

(smith): nov, 00
antennas (severns): may, 2
first bimonthly issue, the (severns): jan, 2
new editor: doug smith, kf6dx (smith): sep, 2
one year since qex restart (severns): jul, 2
qex editorial approach (severns): mar, 2

letters to the editor

a solid-state r-390? (johnson): mar, 58
about wave interference and impedance matching (cross): sep, 58
about wave interference and impedance matching (nichols): sep, 58
about wave interference and impedance matching (weingarten): sep, 58
another exchange about screen bias supplies (jones): mar, 59
another exchange about screen bias supplies (white): mar, 59
clarifications of "exploring the 1:1 current (choke) balun" (sabin): mar, 57
comments about tetrode power supplies (johnson): jan, 62
comments about tetrode power supplies (white): jan, 62
discontinued part for "the belittler" (nov 1997, latta, jr.): jul, 59
how about a switching tetrode power supply? (anderson): jan, 62
october 1997 qex editorial (kelsey): mar, 58
october 1997 qex editorial (mallozzi): mar, 58
printed circuit boards available for (july 1997) dds vfo (schetgen): mar, 59
q of shielded loop antennas (mallozzi): jul, 59
qex improvements, and the ionosphere (avery): jul, 59
qex improvements, and the ionosphere (nichols): jul, 59
qex suggestions (stockton): nov, 00
signals, samples and stuff: a dsp tutorial (blanchard): nov, 00
signals, samples and stuff: a dsp tutorial (wicklund): nov, 00
valve amplifier with three or more anode lines! (kirkby): mar, 58

new products

arrl educational activities department announces new videos: mar, 61
protection for shotgun modem-bonding and modem doublers (stifter): sep, 49

rf

assembling a 10-band 50-mhz to 10 ghz station (lau): may, 54
designing band-pass filters (lau): jul, 53
homebrewing a 6 meter yagi (lau): jan, 52
inexpensive 3456 mhz dish feed, an (lau): mar, 53
narrow 80 meter band-pass filter, a (lau): sep, 57
narrow-bandwidth 40 meter bandpass filter, a (lau): nov, 00

technical articles

add some stability to your life (bingham): nov, 00
arrl radio designer and the circles utility, part 1: smith chart basics (sabin): sep, 3; part 2, nov, 00
build a high-voltage power supply at low cost (henderson): jan, 47
car-as a contoured ground plane, the (madle): jan, 3
cheap sweep, a (hoover): nov, 00
concise calculation method for pi-l networks, a (lickfeld): sep, 47
continuous coverage hf vfo, a (morgantini): jul, 32
cyload cylinder-loaded dipole, the (wright): sep, 44
elevated monopoles vs active-mast antennas (bingeman): mar, 29
examining the mechanics of wave interference in impedance matching (maxwell): mar, 17
extending the double-tuned circuit to three resonators (hayward): mar, 41
"fast" digital oscillator stabilizer, the (lawton): nov, 00
faster and better adc for the ddc-based receiver, a (anderson): sep, 30
flexible frequency generator, the (cross): may, 50
harmonic filters, improved (tonne): sep, 50
high performance regenerative receiver design (kitchin): nov, 00
high-performance fractional-n synthesizer, a (rohde): jul, 3
homebrew 2.4 ghz waveguide filter, a (reed): mar, 50
how the ionosphere really works (nichols): mar, 37
introduction to microcontrollers: ham radio style!, an (williams): jul, 28
low-noise front-end design with arrl radio designer example: a 23-cm preamp (brown): sep, 33
measurement of signal-source phase noise with low-cost equipment (pontius): may, 38
monitor the phase-3d satellite with this homebrew 2.4 ghz receiver (reed): jan, 40
multiple-octave bidirectional wire antennas (zavrel, jr.): jul, 50
nec and mininec antenna modeling programs: a guide to further information (cebik): mar, 47
nec-4.1: limitations of importance to hams (cebik): may, 3
nonlinear distortion in bipolar transistors (trask): nov, 00
no-tune transverter-spur identification (mckay): nov, 00
parabolic dish feeds-performance analysis (wade): jan, 9
practical hot-guy-wire antennas for ham radio (bingeman): nov, 00
quick, easy network analysis on a pc using mathcad (vacca): sep, 10
remote bandswitch for the 'bug catcher,' a (protas): sep, 39
rf phase shifters for phasing-type ssb rigs (blanchard): jan, 34
signals, samples and stuff: a dsp tutorial (part 1) (smith): mar, 3; part 2, may, 22; part 3, jul, 13; part 4, sep, 19
space-age look at polar-cap-absorption events, a (leutzelschwab): nov, 00
test for ambient noise, a (lefferson): sep, 54
twin-t filter, the (cope): jul, 45
updated electronic eyeball, an (dildine): jul, 38
voltage multipliers (cope): mar, 25
wire modeling limitations of nec and mininec for windows (rockway and logan): may, 17

upcoming technical conferences

16th space symposium and amsat annual meeting: sep, 49
16th space symposium and amsat annual meeting-call for papers: may, 59
1998 international microwave symposium and exhibition: may, 59
24th eastern vhf/uhf conference: jul, 58
amateur radio papers at ursi 1999?: jul, 57
central states vhf conference: jul, 57
central states vhf conference (1999) call for papers: nov, 00
"four days in may" ྞ qrp-arci conference: mar, 60
microwave update ྞ: jul, 57
southeastern vhf society technical conference: mar, 60
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只看该作者 17楼 发表于: 2006-12-08
1999 index issues 192 through 197
(all dates are 1999 unless otherwise indicated.)

empirically speaking (smith)

about the amateur radio technology task force: may, 2; nov, 2
great inventions: mar, 2
psk31: jul, 3
receiver challenge: sep, 2
reprint permission policy change: may, 2
qex content: jan, 2

feedback

3cx800s for the magic band, a pair of (jan, pp 22-27): jul, 64
radiation-pattern plots, creating 3-d antenna (jul, pp 40-43): sep, 62
rf: transmission lines and arrl radio designer (may, pp 58-59): jul, 64

letters to the editor

3cx800s for 6 meters, a pair of (sayer): mar, 60
300-w mosfet linear amplifier, a (frey): jul, 63; (hayward): jul, 63
better moustrap?, a (montague): jul, 62
calibrated panoramic adapter, a (anderson): jul, 63-64
center-loaded whip antenna loss (bowen): nov, 00; (bingeman): nov, 00
digital commutating filter, a (anderson): jul, 62; (kossor): jul, 62
educational activity award nominations: jan, 62
fields, near and far, of (in "a test for ambient noise," lefferson): jan, 61; (smith): jan, 61
handy coil winder; compact mobile tuner (smith): mar, 60; (stewart): mar, 60
high-performance homebrew transceiver, a (johnson): may, 62; (pierce): may, 62; (carver): may, 62
hot-guy-wire antennas for ham radio, practical (bingeman): jan, 62
measuring distortion in linear amplifiers (may/jun 1999) (chadwich): sep, 61
multiple-octave bidirectional wire antennas (zavrel): jan, 62
new look at the gamma match, a (severns): sep, 59; (gordon): sep, 59; (barker): sep, 59
pc-dsp, oktay alkin's, prentice-hall (smith): may, 62
performance specifications for amateur receivers of the future (drentea): jul, 60; (anderson): jul, 60; (graf): jul, 60; (fleagle): sep, 60; (popesue): sep, 60; (chadwick): sep, 60; (graf): sep, 61
phase-noise measurement (van der list): mar, 61
pi and pi-l networks, on (bartell): sep, 62
pi-l networks, a concise calculation method for (lickfeld): mar, 59; (bartell): may, 61; (sayer): mar, 59; (smith): mar, 59
psk31: a new radio-teletype mode (sabin): nov, 00; (martinez): nov, 00
qex is great (french): sep, 62; (carver): sep, 62
qex web site, about the (harris): mar, 61
radiation-pattern plots, creating 3-d antenna (smith): sep, 62
regulated 2400-v power supply, a (williams): sep, 62
signals, samples and stuff: a dsp tutorial (smith): jan, 62
standard application programming interfaces (heath): mar, 61; (smith): mar, 61; (dowler): mar, 61
switching power supply for beginners, a (mack): sep, 62
tetrode boards, the (white): jan, 62
tune ssb automatically (premena): mar, 61; (smith): mar, 61
wind-load standards to yagi antennas, practical application of: part 2 (koning): may, 61; (bonney): may, 61

next issue in qex: jul, 64; may, 62; mar, 57; sep, 64; jan, 62

rf (lau)

70-cm power divider, a: jul, 56
accurately modeling capacitor q in arrl radio designer: nov, 00
adding an amplifier with a transfer switch: mar, 55
low-loss 50:450-( mf/hf transformer, a: sep, 57
solid-state microwave power amplifiers, building: jan, 58
transmission lines and amateur radio designer: may, 58; feedback jul, 64

sidebars

better mousetrap, a (in "performance specifications for amateur receivers of the future"): may, 49
convolutional code, the (in "psk31: a new radio-teletype mode"): jul, 9
cross-flo principles, some notes on (in "practical applications of wind-load standards to yagi antennas"): mar, 49
is psk31 legal? (in "psk31: a new radio-teletype mode"): jul, 9
modeling closely spaced wires with nec-2 (in "the multiband extended double zepp and derivative designs"): jul, 37
tools for interdigital filter construction (in "waveguide interdigital filters") (wade): jan, 7
what about ground effects? (in "the multiband extended double zepp and derivative designs"): jul, 38

strays

new amateur radio dx information page: sep, 64
write for qex: sep, 64

technical articles

3cx800s for 6 meters, a pair of (hanson): jan, 22; feedback, jul 64
10 ghz remote-control system for hf transceivers, a (beals): mar, 9
100-w mosfet hf amplifier, a (sabin): nov, 00 (see also "diplexer filters . . ." and "power supply . . ."
300-w mosfet linear amplifier for 50 mhz, a (frey): may, 50
a-frame mast, inexpensively, a large (side bar to "another way to look at vertical antennas"): mar, 7
bedford receiver, the: a new approach (green): sep, 9
better mousetrap, a (sidebar to "performance specifications for amateur receivers of the future"): may, 49
calibrated panoramic adapter, a (dildine): may, 9
center-loaded whip antenna loss (bingeman): jul, 17
cheap sweep, the (hoover): jan, 54
compact mobile tuner, a (wintheiser): jan, 28
convolutional code, the (sidebar to "psk31: a new radio-teletype mode"): jul, 9
cross-flo principles, some notes on (sidebar to "practical applications of wind-load standards to yagi antennas"): mar, 49
current sources (cope): sep, 55
dentron mla2500 hf to 6-meter conversion, a (worsham): mar, 38
digital commutating filter, a (kossor): may, 3
digital-receiver design, basics of (brannon): sep, 36
diplexer filters for an hf mosfet power amplifier (sabin): jul, 20
distortion in linear amplifiers, measuring (schreuer): may, 55
double-tuned active filter with interactive coupling, a (heemstra): mar, 25
handy coil winder, a (dildine): jan, 51
hf whips on cars, campers and rvs (madle): may, 32
high-performance homebrew transceiver, a (mandelkern): part 1 mar, 16; part 2 sep, 3; part 3 nov, 00
homebrew logic analyzer, a (cicchinelli): nov, 00
interdigital filter construction, tools for (sidebar to "waveguide interdigital filters") (wade): jan, 7
low-distortion receiver front end for direct-conversion and dsp receivers, a (rohde): mar, 30
modeling closely spaced wires with nec-2 (sidebar to "the multiband extended double zepp and derivative designs"): jul, 37
multiband extended double zepp and derivative designs, the (zavrel): jul, 34
narrow-band doppler spectrum techniques for propagation study (martinez): sep, 45
new look at the gamma match, a (barker): may, 23
noise/gain analyzer, a (smits): nov, 00
parabolic dish feeds-phase and phase center (wade): sep, 24
performance specifications for amateur receivers of the future (graf): may, 43
phase 3d's 10.4-ghz downlink: a project study report, preparing to receive (maier): jul, 44
phase-noise measurement, experiments with (van der list): jan, 31
polarization modulation: a technique worth investigating (nichols): mar, 34
power supply for a mosfet power amplifier (sabin): mar, 50
psk31 legal?, is (sidebar to "psk31: a new radio-teletype mode"): jul, 9
psk31: a new radio-teletype mode (martinez): jul, 3
radiation-pattern plots, creating 3-d antenna (smith): jul, 40; feedback sep, 62
receiver band-pass filters having maximum attenuation in adjacent bands (wetherhold): jul, 27
regulated 2400-v power supply, a (williams): jul, 50
signal sources (pontius): nov, 00
stable, low-noise crystal oscillator for microwave and millimeter-wave transverters, a (stephenson): nov, 00
standard application-programming interfaces (apis) in amateur radio, the need for (dobranski): jan, 19
switching power supply for beginners, a (mack): jul, 10
technology and the future of amateur radio (smith): nov, 00
temperature-compensated dds vfo, a (preuss): jan, 42
transverter-spur identification, no-tune (mckay): jan, 56
tune ssb automatically (dick): jan, 9
underground hf antennas (bingeman): sep, 52
vertical antennas, another way to look at (severns): mar, 3
waveguide interdigital filters (wade): jan, 3
what about ground effects? (sidebar to "the multiband extended double zepp and derivative designs"): jul, 38
wind-load standards to yagi antennas, practical applications of (bonney): part 1 jan, 46; part 2 mar, 44

upcoming technical conferences

17th space symposium and amsat-na annual meeting, the: sep, 63
18th annual arrl and tapr digital communicaitons conference: jul, 59; sep, 63
33rd annual central states vhf conference announcement: may, 60
ྟ qrp-arci conference: mar, 58
1999 ieee mtts international microwave symposium, the: may, 60
1999 southeastern vhf society technical conference: mar, 58; nov, 00
amsat-na call for papers: may, 60
eme 2000 brazil conference: sep, 64
eme symposium 99: jul, 59
microwave update ྟ: sep, 63
western states weak-signal society conference: jul, 59