[Amps] RF in the Audio

[Jim Brown]

On 9/23/2011 3:08 PM, Robert Kirkland wrote:
> I think your quite right in "seriously choking off your feeders". But 
> please tell me how to use toroids on a 600 ohm open wire line. 

Wind a bifilar choke using 12-14 bifilar turns of #12 THHN on a #31 
2.4-in o.d. toroid. It introduces a small mismatch (Zo approx 100 ohms), 
but only about two feet of line. Photos and details in the latest 
version of my RFI tutorial. http://audiosystemsgroup.com/RFI-Ham.pdf

73, Jim K9YC