Topband: Commond mode choke for Beverage

[Jim Brown]

On Mon,10/12/2015 1:27 PM, JC wrote:
> It works like a voltage divider where the impedance to ground should be lower as possible to give you more attenuation  like 1k/500ohms versus 1K/5 ohms divider.

Yes.

But to expand on this -- often the interference is coupled into a gain 
stage or RX by a Pin One Problem. ALWAYS make the first connection of 
any cable shield to the shielding enclosure of EVERY active device. 
Follow this rule regardless of the function of the cable -- input, 
output, control line, RF or audio.

It's also good practice to bring RX antennas into the shack via the same 
grounding panel used for TX antennas. And that panel must be tied to 
local ground rods, those rods bonded to all other grounds, to the shack 
desk, etc.

73, Jim K9YC