Topband: RFI on TB

[Richard (Rick) Karlquist]

On 7/22/2019 3:59 PM, 57JNDenneny at comcast.net wrote:

> I am uncertain this will cure problem, My TB and yagi coax shields are
> showing a noise signature on his analyzer.
> 
> This was a shock as both coax cables have commercial bead type choke baluns.

> Jim K7EG

I'm not shocked.
Bead type choke baluns are rarely effective on 160 meters.
Refer to K9YC's handbook (or read his prolific posts to this
reflector) to learn how to make effective chokes using large
toroids as opposed to beads.

Rick N6RK