[TowerTalk] choke / balun design needed

[Jim Brown]

On Mon,4/27/2015 6:50 AM, Alex Malyava wrote:
> What would be the bestest design for choke or balun to be used with dipole
> or OCF dipole?
> Like what type of core, number of turns or number of beads?

k9yc.com/RFI-Ham.pdf

See the Choke Cookbook and text that precedes it.

An off-center fed antenna is inherently poorly balanced, so it puts a 
high common mode current on the feedline, which in turn places a high 
common mode voltage across any choke. It is well known that even very 
good common mode chokes are likely to fry (fail destructively) when used 
with even moderate power levels. You MIGHT get away with it at 100W, but 
at some higher power level it WILL break.

73, Jim K9YC