Well, there's one final, further item to add to this. I've almost certainly destroyed my sub receiver. It's not completely deaf, but very, very, very close to it. Signals that are in the noise on VFO-B are S9 on VFO-A on the same frequency.
Anything I can do to test this out? With Bouvet coming soon (hopefully) I'm really hoping to have a working radio to work this ultra rare one. The risk of another 4 or 5 weeks of down time is very depressing at this stage. - pjd -----Original Message----- From: Peter Dougherty <li...@w2irt.net> Sent: Monday, March 11, 2019 1:33 AM To: 'elecraft@mailman.qth.net' <elecraft@mailman.qth.net> Subject: RE: [Elecraft] 80m KPA1500 High reflected power problems **SOLVED!** Hi folks, FOUND THE PROBLEM....Maybe?? I have a 30 foot vertical ground-plane style antenna that I use for diversity RX on 40 and 80, which was connected to the AUX antenna port. This was being overloaded by the QRO power from the TX antenna feedpoints just a few feet laterally and 40-50' higher vertically. As soon as I disconnected this antenna the problem went away. NOTE that the problem only occurred on the lower CW portions of both 80 *and 40*, as I found out tonight. In the SSB sections, even on CW transmit, there were no problems. But as I said, disconnecting the diversity AUX antenna solved the High SWR amp fault. So now, the big question, is there some form of filtering within the K3s to disable receive on the AUX line during transmit, or do I have to look into a second "front end protector" device as I have on my K9AY loop connected to the RX IN port. Or perhaps some other valid solution? At least I'm glad I finally have full operation back on 40 and 80! - pjd ______________________________________________________________ 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
