[Elecraft] Bad Ham Radio Day

[Jim Brown]

On 9/4/2021 2:03 PM, jerry wrote:
> I made up a short length of RG8/U with 4 Palomar 31-mix giant ferrite 
> beads

Palomar SELLS these cores, at high prices. Fair-Rite MAKES them.

  - a common mode choke.  No difference.

This is only a good choke at VHF. If your problem is HF, multiple turns 
must be wound through the core. Study choke recommendations here.

http://k9yc.com/KillingReceiveNoise.pdf

And here. http://k9yc.com/RFI-Ham.pdf

73, Jim K9YC