[MRCA] TRC-88 Schematic / Manual?

[Tim]

Hi to all.  An RT-665( )/TRC-88 transceiver has landed on my workbench.
The TRC-88 is a close derivative of the basic TRC-77 CW set however the '88
includes a USB transmit capability as well.  The receivers are similar but
the transmitters and topology are quite different as expected.  They seem
to be somewhat rare in captivity.
Does anyone have a manual or even (especially) just a schematic available?
Or even a TM number?  A search has yielded nada...

Apologies for the shotgun transmission across lists..
73, Tim
N6CC
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.qth.net/pipermail/mrca/attachments/20170907/8cf424f3/attachment-0001.html>