[Elecraft] [KPA500] Reduced band sensitivity when in OPER

[mcduffie at ag0n.net]

On Wed, 9 Sep 2015 17:18:33 -0700, Chris Johnson wrote:

> I just noticed that if I flip my KPA500 into OPER, the band sensitivity drops by a huge amount.  I have a KAT500 between it and my rig.  If I flip it back to STBY, the band reception is back to normal.   The amp still puts out power according to the W2 that is after it.

Sounds like a probable bad PIN diode.  You should see minimal change.  I show
one db change in audio level on WSJT on six meters.  Check with E-craft on
troubleshooting the diodes and see what they say.

Gary