[TowerTalk] Baluns

[Jim Brown]

On Tue, 21 Aug 2007 14:42:06 -0700, Bill Turner wrote:

>I'm thinking of replacing the toriod-core balun

See my tutorial on RFI and common mode chokes. 

http://audiosystemsgroup.com/RFI-Ham.pdf

Use 4 turns of the coax through five #31 or #43 toroids, wound in 
the style shown in the photo. It's ideal for 20-10 meters, even 
better than the W0IYH choke that Tim uses. 

73,

Jim Brown K9YC