[RFI] Electric blankets

[Jim Brown]

On Wed, 18 Nov 2009 11:27:58 -0500, Martin Ewing wrote:

>Eight or nine turns on a type 43 or 77
>core is much better, but may require surgery.

See measured data in my RFI tutorial for multi-turn chokes wound on 
#31, #43, #61, #77, and #78 toroids, and on a #31 1-inch i.d. clamp-
on. For 40M, #31 or #43 are the weapons of choice. 

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

73,

Jim Brown K9YC