How did you figure out that transformer was the cause? I have a very
similar problem--horrible RFI when it's _cold_ outside. I figured it
must be a neighbors heater, but now you've got me thinking.

-Art

BDK wrote:

Could be a nearby transformer going sour when the sun goes down. I had
one about a half mile away from me that put out all kinds of hash when
the sun went down, or when it got below 60 degrees or so. It wasn't
horrible when it was warmer out, but when it got cold, wow!


Lightning took care of it one night, after about 2 years of the local
power company telling me "It's on the list".

BDK