[Elecraft] K3 Intermittently loses gain

[KF4VTT]

Did this problem happen after you connected the amp?

I ran into a similar problem.  My external Ameritron T/R relay failed and
held the amp in transmit.  The only way I realized that the amp was stuck in
transmit besides the diminished receive was the heat I noticed coming off
the amp.  I could see the heat rising against the backdrop of the wall. :-)  
Thank goodness I did not have drive going to the amp that amount of time.  I
would be buying a brand new pair of 3-500's.  I removed the external T/R
relay and started using the internal ability of the K3 to trigger the amp.

Besides checking the ideas from the other guys, check your T/R circuitry for
your amp.

73,
Doug
KF4VTT
K3 #1289
P3 #371
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