extra functions for the standard c520/528
-----------------------------------------
1). additional functions whilst in "set mode"
while holding the [func] button press the [0/set sb] button to enter
set mode. (see section 15 in manual).
whilst still in set mode the following btttons can be pressed, together
with the [func] button, to provide the these functions
button function
------ --------
[3/po] changes band in use in extended coverage mode (uhf only)
i.e. 300 mhz / 400 mhz / 800 mhz / 900 mhz
[4/fl dm] displays a "." between 2nd & 3rd digit. what else it does
is a mystery, if anyone knows please let me know.
[6/step] toggles the tunning steps on the knob on top whilst [func]
is depressed, between 1mhz and 0.1 mhz.
[8/rpt] enables / disables cross band talk through mode. when enabled
a "." appears to the top right of the memory number position.
[9/rev] toggles up and down buttons between the normal steps and
10 mhz steps.
[dwn/* ps] enter cloning mode. transfers all memory data between
2 x c520/528`s. tune both radios to the same frequency on one
of the bands. enter cloning mode on both radios. press ptt on
hhe radio that contains the memory data, a series of dtmf
tone will be heard for approx 2 minutes. the receiving radio`s
memories will now be identical to the transmitting radio.
2). extra memory functions, 40 memory channels or separate tx/rx freq`s
although the standard manual states that 20 memories are available
split between vhf and uhf bands, in fact there are 2 memory channels
for each memory number on the vhf and uhf bands. these can be used in
2 ways. one way is to double the number of simplex channels availible,
another is to provide programable rx and tx frequencies for each memory
number.
a) programming separate rx & tx frequencies in one memory location
1. in vfo mode select your rx frequency
2. press [func] and [v/m ent] buttons together
3. press the memory number to be programmed
4. press [v/m ent] button to return to vfo mode
5. select your tx frequency.
6. press [v/m ent] and [func] buttons together
7. press [func] button together with the memory number to program
"+-" will appear in the repeater shift display to indicate that the
memory channel is now in split frequency mode. once a memory location
has been put into split frequency mode it cannot be changed back to a
simplex memory unless it is programmed as an extra channel (see below)
or a reset is carried out.
pressing [func] and [9/rev] will cause the rx and tx frequencies to be
swapped.
b) programming extra memory channels, extends to 40 memories.
program the first 10 memories on each band as per the manual. to
program the additional 10 memories on each band follow the instructions
below.
1. in vfo mode select the frequency required.
2. press [func] and [v/m ent] buttons together. _
3. press [func] and [a/cl] buttons together. (an m will be displayed)
4. press the memory number to be programmed
to recall these extra memories. either use the rotary tunning control
in memory mode, which will now cycle through all programmed memories.
or enter memory mode and press [func] and [a/cl] together and the bar
will appear above "m" indicator as when it was programmed, pressing
buttons 0 to 9 will then recall the extended channels.
the extended memory channels can have repeater shifts and ctcss tones
programmed in to them in the normal way but the value of the repeater
ofset and the frequency of the ctcss tone will be the same for both of
the channels stored in one memory location. i.e memory 1 and -1 will
both have the same repeater ofset but if the ofset is not activated on
channel -1 then it can be used as a simplex channel.
all the functions for the standard c528 are as below. if anyone out there has
any that aren't listed, please mail to me!
standard c520/c528 modifications
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
this file is a compendium from to others being bandied about the place. it
is hoped this will be the better of them, being the easiest to follow!
o to open up the rx only up on the unit on vhf:
vhf f+0 f+d
o to add 320-400mhz, 400-480mhz, 820-900mhz, 900-980mhz:
uhf f+l f+0 f+b f+l f+3 a
o to expand tx/rx coverage, do both the above in that order, then:
vhf f+6 change step to 12.5mhz a
f+8 f+8 f+c
tune down to 144.9875
f+0 f+d ptt f+8 f+c
o to store independent transmit/receive frequency in one channel:
enter receive frequency into dial
f+d <mem number>
enter transmit frequency into dial
f+d f+a f+<mem number> a
o to clear the tx assignment offset:
f+d f+a <mem number>+a f+a a
o to clone one set to another:
b b f+0 f+ps then key up on the set to clone from
set mode key assignments:
the set mode allows a number of user parameters to be customised according
to individual taste. set mode is initiated by pressing f+0. the following
are entered after going into set mode:
0 turns off the beep tones on each keypress
f+0 sets band edge limits, i.e. 0079=100-179, 400-479. 3060=130-160
1 changes count of paging operations tone, one beep or 5
f+1 set tx delay on carrier drop when using as cross-band repeater
2 enables entry of the 1khz figure on direct keypad entry
f+2 stop scan on busy channel even if ctcss doesn't match
3 sets mod delay on paging tx to either 450ms or 750ms
f+3 switch uhf bands between 300/400/800/900
4 mutes short noises during squelch operation
f+4 keypad entry of 4 digit or 3 digit frequency
5 turns on and off the auto power off function
f+5 pager audio mute (mutes any audio that follows the paging signal)
6 enable/disable the rotary channel knob when keypad locked
f+6 fast tune (f+knob) gives either 1mhz steps, or 100khz
7 sets the ctcss tone frequency
f+7 either dual tone multi frequency, or single tone frequency
8 sets the offset repeater frequency
f+8 cross band repeater enable/disable (identified on display by a ".")
9 changes the lamp button into the rev button
f+9 up and down keys either act as the knob, or as 10mhz steps.
/---------------------------------------------------------------------------\
| standard c520/528 - keypad guide |
|---------------------------------------------------------------------------|
|key| alone | with "func" key | key alone in set |in set with "f" |
|---------------------------------------------------------------------------|
| 0 | 0 |enter set mode |mute keypad bleep |set band edge limit|
| 1 | 1 |ptt lock |1/5 beeps when paged|tx wait on c-b rept|
| 2 | 2 |dual watch |1khz entry on keypad|match ctcss on scan|
| 3 | 3 |output power |tx delay on repeater|switch uhf bands |
| 4 | 4 |frequency lock |mute noises dur sql |dir input 4/3 figrs|
| 5 | 5 |battery saver |automatic power off |no audio after page|
| 6 | 6 |select step size |enable tune in lock |fast tune 1mhz/100k|
| 7 | 7 |ctcss select tx/rx |ctcss tone frequency|single/dual tone mf|
| 8 | 8 |repeater shift +/- |set tx/rx split freq|cross band repeater|
| 9 | 9 |reverse repeat shift|make lamp button rev|up/dn keys do 10mhz|
| * |step down|search 1mhz band | | |
| # |step up |memory shift | | |
| a |cancel | | | |
| b |pager on |set pager codes | | |
| c |mem scan |partial memory scan | | |
| d |dial/mem |store dial in memory| |extend rx coverage |
|---------------------------------------------------------------------------|
| expand:vhf f+0 f+d a | independent transmit/receive frequency |
| uhf f+l f+0 f+b f+l f+3 a | [rx] f+d <mem> [tx] f+d f+a f+<mem> a |
| vhf f+6 step to 12.5mhz a | remove independent tx freq from memory |
| f+8 f+8 f+c | f+d f+a <mem>+a f+a a |
| tune down to 144.9875 | clone one set to another |
| f+0 f+d ptt f+8 f+c | b b f+0 f+* [ptt] on source set |
\---------------------------------------------------------------------------/
origin 2:252/140 @ fido :: 17/09/91 ::
sysop@f140.n252.z2.fidonet.org
