I have had a problem at my vacation house/contest station with broadband noise
across the 80M band, typically s5 to s8. I recently installed a 4-square, and
the noise peaked in the general direction of my own house. Looking at the
display of the 756Pro3, I could see a very broad peak across most of the 80M
band, and a second, not-quite-as-broad peak around 2.5 MHz. I could hear the
noise on either the 4-square or the 160 vertical. It does not seem to be a
problem on any other part of the spectrum.
I switched off the breakers in the house one by one, and the last one I hit,
the 220V breaker pair for the electric clothes dryer, killed the noise.
The dryer was not operating at the time.
Has anyone else seen this?
I am assuming the noise is really in the dryer someplace, although my next test
will be to leave the breaker on and unplug the dryer at the wall outlet. I
suppose it is possible that there is another source of noise somewhere, and the
length of the loop to the dryer outlet is the right (wrong) length to radiate
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