On Jan 18, 10:10*pm, Bob Dobbs wrote:
D. Peter Maus wrote:

* You sound like you're living in the noise equivalent of the Little
Big Horn.

Before the last move three years ago I lived close to there.
Or so it seemedhttp://img.myph.us/Ar9.jpg
From the left is a Butternut 80/40 vertical then an Imax 2000 (CB antenna)
for 10, 12, 15 and also mounted on the back porch a Diamond V2000 for
6, 2, 440. then on the roof is a discone plus some UHF WX transponders.
In addition to Cox and Ma Bell were 4kv, 12kv distribution feeders,
and above that a 138kv tie line (not visible in pic). All of that wire either
radiated its own noise or parasitically re-radiated noise of the others
so it was often, but not always, difficult to get a precise source to use in the
phase noise canceler (ANC-4).
The TV antenna was useful to get OTA LA stations like KCAL9,
SoCal's premier car chase station. g

This looks bad, worse than my situation. I just have the local
residential feeder out front, probably 12 kv, and a set of parallel
feeders in back that probably range up to 138 kv that serves the
industrial park 500 feet west of me. I can often reduce noise from
one source with my MFJ-1026 (similar to the ANC-4), but just the one.
I hate the idea of piling up multiple MFJs and antennae to try to
catch all of the sources.

There are some high-tension lines out about 1/2 mile west or so, but
they are pretty far. They audibly crackle and snap all the time,
though, whenever I ride my bike past them.