[Drake] TR3 Issue

[Chris Codella, W2PA]

Robert,

We might need a few more symptoms to diagnose this.

If the S-meter goes all the way right after warmup, it sounds to me like 
the receiver is muted because the RF gain is turned all the way down.  
Even in transmit, the meter shouldn't do that (it doesn't do that on my 
TR-4 anyway).  I'd start by poking around the AGC line.  The voltage 
should change smoothly as the RF gain is varied.

73,
Chris, W2PA

Robert Wood wrote:
> I do not receive any signal switching between all bands and modes (I have an
> open 1/4 plug in the CW plug).  All of the voltages from my AC4 are good, and I
> validated the regulated 150 voltage is good.  I tested also tested all of the
> tubes on a tube tester and they all indicate good.  I can get the speaker to hum
> by touching volt/ohm meter on audio pot, and the carrier detect pot, but that is
> as far as I have gone.  Another interesting symptom is the S meter goes all the
> way to the right after the radio warms up.