Thanks to those answering my request for noise reduction sources/sites.
Several pointed out the distinction between heterodynes originating in
the receiver and noise external to the receiver. I was careless in the
wording of my original post for which I apologize. Since a picture is
worth many words, I'm included a screen shot of my panadapter tuned to
15m [see below] with the "noise" spikes clearly pictured. I have not
tried the house shut down with the radio operating off a battery. Other
time demands, but will do so shortly. I'm sure that will be informative.
Interesting that the spikes occur only in the vicinity of 15m. They
gradually diminish outside 15m until they are completely gone by 20.000
and 22.000 MHz.
...robert KE2WY
--
Robert G. Strickland, PhD ABPH KE2WY
[email protected]
Syracuse, New York FN13xa
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