何老哥一出手就是大作。
eagle spitfire 454
similar to: cherokee ah-100 am/ssb(discontinued when fcc "pulled ticket")
titan rpsy-201 am/fm/ssb
magnum ssb-1010 am/fm/ssb(dealer claims 15w p.e.p. am)
intek ss-201 am/fm/ssb
dragon ss-201 am/fm/ssb
dragon ah-100 am/fm/ssb
albrecht ae201 s am/fm/ssb
4w am/fm, 6-8w ssb
both channel and frequency readout.
slide-out battery system: can use either 9 "aa"
alkaline or rechargeable "aa" nickel-cadmium.
battery life enhancement circuitry dramatically
extends talk time between charges
auto-frequency scan
has a bnc antenna connector
clarifier control for fine tuning incoming ssb signals
mic-gain and rf gain
squelch control for eliminating background noise
key lock to lock the keyboard settings
selectable high/low power output
has fm repeater offset and 88.5 mhz tone
wrist strap and belt clip
plug in jack for external speaker/microphone(not included)
short base loaded whip
cigarette lighter plug and wall charger included
this radio is available through copper electronics for around 150 bucks. the titan clone, new in box, goes for around 109-129 on ebay quite regularly. most of the accessories are available from other sources, but you'll have to do a lot of leg work to find them. so far, we've found the desktop drop-in charger, mobile-com adaptor, leatherette case(these first 3 items came from cherokee electronics, and were originally for the ah-100, and case is adjustable length for long battery shell or shorter nicad pack), long 34" base loaded fiber-flex whip(coppers), and radio shack spkr/mic. bills 2 way also has some accessories for them, including factory ah-100 nicad packs, but this stuff is going fast, so you'd better get while the gettins' good. cherokee discontinued the radio (ah-100) because the fcc pulled the manufacturer ticket. oh well..it didn't have fm anyway.
this eagle 454 came from ebay, brand new, with box, blah blah, blah, for 137 bucks. it had not been modified for export use so was still strictly an amateur radio, however the seller conveniently included some mods he had found on the web, and a clean ah-100 nicad pack, which was great because the radio comes with only an empty battery shell. there are several instances of the same mods on the web as well, and a quite detailed and nicely drawn schematic at the albrecht radio site.
after completing the mods, which take about 15 minutes, including carefully removing back cover, hunting around for tiny spring which springs itself across the room(the mods warned about this) upon opening the case, inspecting the heat sink, checking out the guts, marveling at the ingenuity, locating and performing the required solder job on the ptt board, finding the spring again(stuck to my arm), resetting cpu with straight pin, and re-assembling radio, it was "ready to talk" with 10 bands of 40 channels.
the factory short antenna is not good for anything but very short range communications. range was about 15 blocks away from home base before being lost in the static, but that was from inside the car. pulled into a local park about 2 miles from home, got out and was back in action. signal report at that distance was about 7s on am/fm, and 20 over on ssb. it was able to make two local contacts right away, one on am ch 19 and one on ch 38 lsb. the trucker gave a "loud and proud" from about 5 miles away, as the crow flies, and the local dx nut was amazed at the concept of a handheld ssb unit, plus commented favorably on the audio and signal quality from about 4 miles away, atcf. that is with the short antenna.
we went to work researching where to find a suitable longer antenna, and happened across the bills 2 way site, where they advertised a "long super flex whip" for the ah-100. with this knowledge in hand, then called copper electronics and found they had the same thing for the same price, ordered it and got it in two days. $19.95 plus shipping. there is an even better antenna out there, center loaded telescopic/duckie by maxon available from bills 2 way. we didn't get that one, because the telescopic part would make it hard to deploy. on the other hand, that would allow precise matching to the band in use. whatever..
this long super flex antenna made a huge difference on receive in the back yard test. suddenly, there was life out there on the freeband and 10m repeaters were banging in like crazy. ok, maybe the propagation was just better that day. time to try the transmit. went to a particular frequency, heard a station in the clear calling cq in a foreign language. gave a reply, expecting nothing. surprisingly, he answered, and gave a qth of the capital city of guatemala! (from the backyard, it's about 2000 miles) we carried on the qso for 5 minutes or so, swapped shack descriptions, and he freaked when it was explained this was a walkie talkie. finished up with him and was unable to make any further contacts, as the band began to deteriorate. over the next few days, logged three more contacts, at random times when the band seemed hot, listened to the rs satellite fly over a couple of times and made several more local contacts in the evenings. the radio kicks butt when connected to a base antenna like an a99, in fact you have to put it on lo rf gain to keep from overloading during hot propagation or in heavy local traffic. made several contacts this way, using battery power only, but that is just cheating. the radio has good receive sensitivity, but no nb or anl, so noise is an issue.
the main operational issue is that the radio does get hot on high power. if the new magnum version really does 15w p.e.p.am/fm, they must have added some iron to keep the thing from melting. the eagle doesn't have a heat sink to the back case(case is all plastic) or to the belt clip like you would expect. it is recommended using low power on am/fm or short transmissions only on high. sideband is not too bad as long as you don't stay keyed down for long with heavy modulation. the spkr/mic provides much better drive on ssb. one thing, if you plan to use a spkr/mic, you need to figure out a way to keep the mic plug away from the antenna base, otherwise, it appears there is a lot of reflected power. you might overcome this problem by using a couple of adaptors to extend the antenna base connector about 1 1/2 inches higher. you might try putting 90 degree plugs on the mic. whatever it takes. there is no swr metering function, and the docs claim that "damage can occur with extended operation over 4:1 swr". on an external meter, the radio showed an output of 4w am/fm, 8w ssb into 1:1 matched dipole.
not much to report on the tuning and key functions as they are pretty minimal. after the export mod, the radio still comes on in ham mode, but just hit a couple of keys to put you in export mode, with 10 bands of channels, cb selector style, including a channels. the radio lacks a nb or anl, which makes it quite noisy at times. the repeat offset and tone are nice for hams. the last channel recall is handy. 100/10/1khz tuning is achieved by a 3/2/1 keystrokes, then up/down. clarifier is good but probably hard to use if you have fat fingers. there is a clarifier transmit mod for on the web, but it might introduce warbling. the 1khz tune should get you anywhere you want, and these off center guys you'll hear need to learn to transmit on center slot anyway. no memory channels, but a handy last channel recall. there is a key beep on/off function. the key beep is annoying. there is no rotary channel stepper. there is a hi/lo rf gain and hi/lo mic gain.
overall, this radio gets a nice 8.5 for useability, 10 cool factor, 10 price. it would probably run forever on low power setting. you won't be sorry unless you planned to make this your only rig, or if you try to tweak it to death. you could even use it as a low power base with the desktop drop-in charger, long antenna and hand mic. it's a killer toy and will be just the thing for those days when you want to try something cool like contacts from the top floor of your office building, or nearest mountain trail, or even the bathroom. do yourself a favor and do not try to jack around with the am audio drive or ssb alc. it runs hot enough as it is. for fm use, you definitely will want to turn the deviation up, especially for ham repeater use.
magnum international is slated to begin shipping their own version of this radio (ssb-1010) very soon. h&y electrical has it "pre-advertised" for 249 bucks. it will be interesting to see what improvements have been, or additional factory accessories added to justify the additional expense over the eagle spitfire or its clones. magnum does have a history of offering "beefier" radios than the average. if you have the opportunity to try one, let us know how it works.
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资料
http://www.ssl100.co.nz/dragon.html
