Agreed. If you have a bad enough match, and it isn't choked, you can certainly get enough RF in the shack to cause havoc. I have some bands I can't use my trackpad *inside my laptop* during full-power ft8 transmit, because I haven't set up proper antennas for that band.
Scott AD6YT On Thu, Aug 27, 2020 at 10:21 AM Don Wilhelm <donw...@embarqmail.com> wrote: > David, > > As someone else suggested, it sounds a lot like RF feedback on 17m. > Try operating into a dummy load to see if the same thing happens - if > not, get out the ferrites. > > 73, > Don W3FPR > > On 8/27/2020 12:41 PM, David Haines wrote: > > > > Here are more details: > > > > All seems to be working fine on 160m-10m except for 17m, so KX3 VFO is > > at 18.100 for the rest of this discussion. > > > > Without WSJT-X running, ATU finds a 1.1 match and TUNE button on KX3 > > works as expected. > > > > With WSJT-X running, using the WSJT-X TUNE button causes the following: > > > > 1. KXPA100 power LED's light from left to right _twice_, in > > synchronization with a musical ringing that rises in frequency, then > > settle down quietly to about 100W. > > > > 2. Around the same time Windows reports "USB device not recognized" > > and the mouse cursor disappears. At this point different things can > > happen: Maybe the cursor comes back and I can stop the TUNE at > > WSJT-X. Maybe it doesn't and I have to shut off the KX3 with XMIT > > button. Sometimes the PC freezes and needs a hard reset. > > > > > > ______________________________________________________________ > 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 scott.sm...@gmail.com -- Scott Small ______________________________________________________________ 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
