[Elecraft] KPA500 receive loss

[Jack Brindle]

This doesn’t really have the signature of pin-diode failure. When the pin diodes fail you generally get major signal loss across all bands. The description simply does not match that diagnosis.
I would ask for further information:

* Is there any change in 160m transmit operation (change in drive requirement)?
* Was any retuning of the 160m antenna required?
* How is the 160m antenna connected? Might it be split to another load somehow?
* Any other changes you see?

Let’s try to diagnose the whole situation. This might not be in the KPA at all, or might be something completely different.

73,
Jack, W6FB


> On Jun 5, 2021, at 12:05 AM, HP via Elecraft <elecraft at mailman.qth.net> wrote:
> 
> Just noticed this evening that on 160 I lose about 6 dB of rx level (noise and signal ) when I go from STDBY to OPER. On 40 maybe a dB or so , on 20 no change -- On160 almost always am using RX antenna so am not going thru the KPA but this evening had Tx ant on RX . 
> 
> Maybe has always been that way and just never noticed ??? 
> 
> Hank K7HP 
> 
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