Hi Thanks for all the suggestions. I cannot re-create the effect on any other band but 10M.
I have checked the PSU and its voltage O/P is stable @13.8V ish, (read on the K3)
Although I shall stick some ferrites on the leads and keep my fingers crossed, (I am some way from my antenna) I suspect a failing component under stress, hopefully coax or balun and not a PA component..
Time will tell, thanks for your advice. 73 Iain G4SGX --- This email is free from viruses and malware because avast! Antivirus protection is active. http://www.avast.com ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]

