Brian wrote:
I've mentioned my rfi problems here in the past, but I just noticed
something I hadn't before. If I sit on a frequency where the rfi is present
it will abruptly cease in about a minute, and move up or down in frequency
roughly 30 kHz to occupy another point previously unaffected, and on and on.
Is what I've described indicative of a particular source of rfi?

Might be a nearby television. If so, the noise frequency will change
when the picture content changes considerably (i.e. not when someone
moves an arm, but when the picture changes from a car to a house).

--
The state religion of the USA is atheism, as established by the courts.