bdenley wrote:


Collins R-388 (same as 51J-3)

I am about to begin trouble shooting my R-388; the crystal
filter phasing control seems to only attenuate rather
than notch, at two opposing points on its dial -- does
yours actually notch? Also, the AVC seems to be
inoperative, but I have read that some folks have
found the AVC to be ineffective even when the circuit
is functional. How is your AVC?

Lastly, the 3.5 - 4.5 Mc band has recently developed
regeneration when the Ant. Trimmer is peaked, with
or without an antenna, if the R.F. gain is set too
high; ever see that?

Michael