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@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 > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to jackbrin...@me.com ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
