[TVARC] High Noise levels on HF

[k2te at juno.com]

Frank,

I have not been listening much on the higher bands because there has not
been much of anything there.  What I do hear is a pulsating noise on 20
that shows up periodically during the day.  It fluctuates at a 1 Hz rate
about an S unit.  I have also observed a noise "mound" on my panadapter
on all bands that is 3-4 S units above the noise and 3 kHz wide.  It
rolls back and forth across the band at a slow rate, drowning out all but
the strongest signals.  I did a tuning run across HF and found it to
occur every 55 - 70 kHz throughout the spectrum.  My suspicion is the
power distribution station about 0.3 miles down the road.  I do not
notice it on AM in the car when driving past. (Not sensitive enough?)

Fortunately, it does not affect FT8.

73 de Ed