Mike, The first response is "what happens if you transmit into a dummy load". If the problem disappears when connected to a dummy load, you either have a parasitic oscillation or you have problem with your antenna system.
Since this situation occurs with multiple transceivers, I highly suspect an antenna system problem. An antenna analyzer may reveal the problem. 73, Don W3FPR On 7/21/2011 7:19 PM, Mike Rodgers wrote: > Not necessarily with a k3 but any rig. I and others have had issues with a > 706 on 15 or 17 and I don't remember which. > I had a weird swr issue and maybe self oscillation on 15. Blew my lpa board > again.( it's my understanding that there is no swr protection for that board > yet because of so few problems but this my third). > I don't know if this could be caused by a dirty roller inductor, I'm going to > clean it. > When I switched over to the 706 I noticed intermittent the cross needles go > straight up. May have been self oscillating, don't know. I believe they would > stay straight up with no modulation. > > Ideas? > Thanks > > Mike R > > Sent from my spy ring > ______________________________________________________________ > 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 > ______________________________________________________________ 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
