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

[Chris Johnson]

Hmm.  I figured it sounded like something not-good.   The setup hasn’t changed in years, so there isn’t a configuration change in play here.

I’ll give them a call tomorrow unless they pipe in here.

Thx

Chris
K6OZY

> On Sep 9, 2015, at 5:45 PM, mcduffie at ag0n.net wrote:
> 
> 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