10-4, you are a jerk of the first magnitude and second order. Most of us
got our ticket to be on HF long before we figured out the subtleties and
nuances of RFI.

OP, you've got two problems. One is classic TVI and the other one is direct
rectification. Let's take care of the second one first.

Yes, your house intercom wiring is acting like a big antenna. Somewhere in
the wiring or at the intercom there is a rectifying junction (can be as
simple as the input transistor at the intercom or as subtle as a partially
corroded connection somewhere else. Coupl'a questions. Do you still get
the intercom interference when you are running directly into a dummy load?
Do you still get the interference when you load directly into a simple
dipole hung at some distance from the house on a temporary test?

Just FYI, the Feds have stated in no uncertain terms that
homeowner/municipal codes (CC&Rs, ordinances, building codes, etc.) canNOT
prohibit the reasonable erection of amateur radio antennas. "Reasonable"
has not yet been tested in the courts as to whether a hundred foot tower
with a ten element 80 meter beam with an aircraft prop motor for a rotor is
reasonable, or whether a 2-meter dipole made out of #40 wire painted to
match the house is reasonable. Put your damned antenna outside and let the
chips fall where they may. THe Feds trump any lesser governmental
restriction (state, county, city, or homeowner's group).

As to the TV part, is it on all channels, or just selected channels?

Jim




"10-4 Good Buddy" wrote in message

I'm guessing the the intercom wires in the walls are acting as a big
antenna, but where would I start putting chokes on? Or would a filter at
transmitter (low/high pass?) be where to start?

Seeing as how you have a license to be on HF, you should be able to figure
that out. Im quite sure that question could be answered by going through
your General theory book......

If you need to ask that question, you have no business on HF