Drake tr4c problem
Recap;
After TX (cw) when relay releases, the RX sounds some times muted but
still there, the S-meter will rise up the scale to about 40+ and the
rx freq is off a bit (like on the wrong sideband)
If I re-Key, all will return to normal...this problem will happen
about 50% of the time... looks like relay is fine), but more like the
mute curcuit is hanging...???
Relay cleaned but problem pops up when fully warmed up after 20+ mins,
I'm going to pick up a new vox curcuit tube (6fq7) and replace to eliminate that... will post results.
Well, VOX tube,6fq7, replaced ( boy, they can be costly ) along with two
others in same section without luck... back to the drawing board. I
thought it was going to be an easy swap. Will recheck relay and then on
to voltage checks ( seems like heat condition )
Tom
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