[Elecraft] K3, KPA500 - PIN Diode Failure in KPA When K3 Subrx Turned on During Xmit?

[K9IR]

My experience is very similar to Chuck's KE9UW. My less than 2 month old
KPA500 was living life merrily and then, for no reason I can determine,
caused my RX signals to drop an S unit or more in Oper mode--most noticeably
on 80M.

The amp now is at the doctor (aka Elecraft support) awaiting final
diagnosis, but the preliminary analysis is that the pin diodes went poof. I
hate to go Gus Grissom on this but they "just blew." I had none of the
dramatics of hitting the wrong button in N1MM or having the coax drop off
just before TX into infinite VSWR--none of that excitement. I wish I had, so
I'd know what not to do next time ;-).

73 Paula K9IR



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