BRIAN,

This depends on many things. Your House and its Wiring.
Your 'ability' to do your own Electrical Wiring to Code;
or your need to have it done by a Licensed Electrician.

Basically, If you have all your Radio Receivers in one Room
and the Electrical "OutLets" in that Room are on One Circuit.
Then you go back to the Main Circuit Breaker Box and 'follow'
that "Circuit" out to a point where you can install a Metal
Electrical Box. You place your Ferrite Cores in this box.
One on each of the Wires: Black, White and Green.
Please Note: This can be a lot of work.

Another 'solution' is to "Place" Clamp-On Ferrite Cores on the
AC Power Cords of Every Piece of Equipment in the Room that
you have your Radios in. I will repeat my self Every Piece
of Equipment in your Shack. For both my Grundig Satellit 800
and Icom IC-R75; which use External Power Supplies. I use a
Clamp-On Ferrite Cores on the AC [Input] Power Cords about
6" from the AC Power Plug. Then I also use a Donut Magnet
on the DC [Output] Cord about 6" from the DC Power Plug.
Note: These Donut Magnets can be bought at RadioShack and
TIP: If you buy/use the big Clamp-On Ferrite Cores; after
the First 'pass-thru' you may find that you can Loop the
Power Cord around for a Second 'pass-thru'. Keep this Loop
small and close to the Body of the Ferrite Cord. Use a
Plasitc Cable-Tie if need to hold everything together.

~ RHF

Thanks Roy. I am not familiar enough with the ins and outs of electricity in
general to go to some of the lengths suggested myself. However, I like the
idea of placing ferrite chokes on all of my equipment and it sounds simple
enough. Also, when checking the individual circuits I noticed interference
from several computer and stereo components, routers, and so on. So, I will
go ahead and place chokes on those things as well and see if that helps.
Thanks again. 73

-Brian