[MRCA] AN/TRC-88 CW/SSB transceiver

[Tim]

Mike said:
"Plus a TRC-88...

I"m surprised.

The very scarce RT-655/TRC-88 looks almost identical to the very common
RT-654/TRC-77, but it transmits both CW and USB.  I've heard of only one
other than mine (serial number 9) in circulation.

Mike / KK5F"
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Hi Mike - Yes, I think the TRC-88 is pretty rare.  I am pretty well
convinced that only 10 were ever made (by the Signal Corps/Sylvania EDL
under a DARPA contract).

The RT uses the same sheet metal, PA tube and receiver RF/Mixer PC board as
the TRC-77 but it is otherwise an entirely different radio.  Aside from
mine (serial #2) and yours (serial # 9) I know of no others in captivity.
(Anyone else?)

I've done some research and a lot of work reviving mine.  Since I could not
find any crystals on the freq's that I use, especially the transmitter HFO
freqs, I decided to build up a pair of circuit boards to replace the
crystals with those Epson programmable oscillators.

They do the job and at $4.05 each they are cheap.  They operate at 5 VDC
and need a logic buffer for channel "selection" but this system works very
well.  I placed them in the space previously occupied by the 6 RX and 6 TX
crystals.

As soon as I get my scanner working again I will include the circuit on my
web post about the TRC-88.  Take a look here for my work-in-progress:
http://www.n6cc.com/trc-88-hf-cwssb-transceiver

73, Tim
N6CC
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