<!DOCTYPE html><html><head><title></title><style type="text/css">p.MsoNormal,p.MsoNoSpacing{margin:0}</style></head><body><div> Heat map could be useful. I would try and find the substation or substations connected to your feeder and see how strong it is around them.<br></div><div> I would also do a search from LF to 20 m to make sure 80m is the lowest band you can see it on.<br></div><div> If it is something arcing, it may destroy it self after a while.<br></div><div> Good luck<br></div><div> Sandy<br></div><div><br></div><div>On Sat, Nov 30, 2024, at 4:10 PM, Rob Seastrom wrote:<br></div><blockquote type="cite" id="qt" style=""><div><br></div><div>Greetings Tacoistas,<br></div><div><br></div><div>Within the past month, there has been an annoying signal taking a bite out of 80m here at the AI4UC QTH. It's strong enough to be disturbing 40m as well as a whiffo on 20 (screen shots below). Doesn't change much if at all day vs. night (or with the weather) which is causing me to partially discount the notion of solar panels causing it, but read on...<br></div><div><br></div><div><br></div></blockquote><div><br></div></body></html>