Sounds like some basic troubleshooting is in order:

1. Get schematics
2. Do a voltage check on power supplies to make sure they are in order.
3. Borrow a scope and track down where the VFO signals are disappearing.
(the problem could be as simple as a dirty relay contacts).

Regards, Bernie, VE3FWF


"AD5GB" wrote in message
...
Greetings,

I wonder if anyone has had any experience with repairing the Kenwood
R/T 599 twins. Mine have ceased to function in transceive mode. I get
no receive using the TX VFO and no transmit using the RX VFO. The units
function separately fine, and the relays all work in transceive mode.
I've checked the crossover cable for breaks and shorts. At this point
it looks like something non-trivial. My hope is that someone has worked
on these things before and has an idea or two they could share.

Many thanks

--
Randall D. DuCharme (Radio AD5GB)

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