[TowerTalk] Common-mode current on feedline

[N2TK, Tony]

Question in regard to Common-mode chokes.

I use Force 12 B-1 baluns on 10-40M. On 80 and 160M I use 50 of the small
beads on RG141.
All the Buryflex and hardline is tied together and buried a few inches in
sand for about 125'. It all ends at Ice 303 lightning arrestors (302
arrestor for 2M) on a grounded aluminum panel in my basement. In addition
there is an ICE coax switch, low pass filter for HF and a 2M bandpass filter
on the panel. My amp is tied into this panel. I have one coax line for HF
and one coax line for 2M coming to the room right above it to my rig.
Should I be using Common-mode chokes anywhere? What benefit would they buy
me? Where would I put them?
Tnx for any feedback
Tony
N2TK