Hello again folks Thanks to all for the suggestions and hints to what this problem could be.
Tests have been done at 2 locations; my own home station and here at another property ( work in progress as we politely say..) about 125km south of Auckland. The same second harmonic garbage is heard at both places. Over the last day I have completely swapped out all the 80m and 40m antenna and feeder components here in the provinces. No change. What I now strongly suspect is the only common point at both locales; both properties have burglar alarms installed. Both are almost identical well known European name brand units. There is no detectable RF radiation from the processors or wiring. The clincher now that I think about the last time we ran 2 stations here without any drama was before the alarm was commissioned here. I have dropped the supply and backup DC to the alarm here without any change, Likely 3.5 meg RF is simply hammering the PIR's, cable runs are in the roof cavity. Can't %100 prove this without fairly major re-wiring, will leave it as is for the meantime, thanks again guys cheers from ZL Paul zl1ajy -- View this message in context: http://elecraft.365791.n2.nabble.com/Slighty-off-topic-80-meter-second-harmnic-how-to-stop-tp7614506p7614534.html Sent from the Elecraft mailing list archive at Nabble.com. ______________________________________________________________ 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
