Is the Windom in your attic or outside? My guess is that your antenna is parallel to the house wiring, and is inducing a current on the ground or neutral wire. A replacement AFCI breaker might fix the problem. Or a heavy choke on the AC.
This may or may not be your situation. Most newer houses run all electric wires from the breaker box up into the attic and back down to wherever they need to be. At least in single-story homes. That puts the attic antenna close to the unshielded house wiring. In my house, it wasn't the AFCI that would go nuts, but the doorbell would ring when I went over 35 Watts on 20m. I had to install a choke on the doorbell wire to stop that. Now, every time I transmit, I imagine the doorbell or smoke detector going off in my neighbor's 2-story next to me. jon N0WL On Mon, Jan 4, 2021 at 2:32 PM Tom Doligalski via Elecraft < [email protected]> wrote: > Should have mentioned that there up is no trouble at 25 watts. > > Certainly no trouble at 100 watts back at Field Day. > > Sent from my iPad > > > On Jan 4, 2021, at 12:57 PM, Tom Doligalski <[email protected]> wrote: > > > > Over the last several weeks I’ve been having problems with the arc > fault detector (AFCI) in my fusebox.This does not control the power to the > shack, but to our garage door operners. > > > > It seemed random at first, but I think I’ve tracked it down a bit. > > > > Running an Elecraft K3/KPA500/KAT500 combo. The AFCI ONLY trips when on > 80 CW, running 100 watts (the KPA500 in standby bode). If the KPA500 is ON > (running 500 watts) there is no problem. > > > > Seems fine on other bands…. > > > > 80M antenna is a Carolina Windom. The usual baluns/line > isolator/grounding stuff. > > > > Any ides? > > > > Kinda worried that there is an issue with the 100 W amp in the K3. > > > > 73. > > > > Tom W4KX > ______________________________________________________________ > 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] ______________________________________________________________ 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]
