On Tue, 19 Aug 2008 09:02:39 -0700 (PDT), DES
wrote:

Question, can a CB transmit 700 miles?

At the power levels you are suggesting, globally during certain
periods of the sun spot cycle. But that is not terribly different
with legal CB power.

As to his remarking that he wasn't doing anything illegal (CB with
amplification that some smarmy posters here think is perfectly OK); if
that be the case, then you need to fix your problem, because the FCC
does not mandate that a Ham legally using his equipment is obligated
to defer to your TV watching habits.

That fix is going to be the same if power levels don't go down for any
reason (issues of morality notwithstanding). The judicious and
liberal application of Ferrite RFI suppressors will solve a lot of
your suffering.

Look at any of your computer display leads and notice the end of the
cable with the odd bulge before one connector. That is a suppressor.
It is nothing more than a ferrite donut or tube. Ferrite is a
magnetic ceramic (it will break like china if you drop it). It is
made in many forms and appears to be dark gray with a slick to dusty
finish. The Ferrite RFI suppressors available at Radio Shack come
with a plastic clamshell holding one of these tubes that is split
lengthwise so you can open it, insert a wire or wires, and then lock
it shut. This makes it reusable if the problem isn't solved with your
choice of wire(s) or where you apply it.

This last suggests experimentation on your part is necessary. It also
means you are going to need more than one given you have described a
number of issues. For a start, get two or three and see how well they
work on the power cords going to the affected component (TV, radio,
computer) and even with both wires of any speaker. In short, put a
suppressor on any interconnecting cable or wire and see if symptoms
change.

73's
Richard Clark, KB7QHC