Here is a sample of one of the noises that plague me. The video is of 20M,
but It can be heard up through 10m and down to 40m, worst on 20m. It peaks
to the NE (lucky me). The period varies from 40-60 secs, but the duty
cycle seems to always be 33%.
Any ideas what kind of noisemaker I should be looking for? Is this what
proportional control fan inverters behave like?
https://drive.google.com/open?id=1mYu-dyv0zWAcbn8-UK97j-LN0pJPxG1U
TIA, Dan
Dan Zeitlin - K2YWE
South Shore ARC - K3AU
Annapolis, Maryland
dan z website <http://danzee.org>
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