[TowerTalk] Fair rite materials for choke baluns

[Steve Hunt]

Rudy,

The #52 mix is readily available in size "240" toroids and makes a 
useful choke for the higher HF bands. Take a look at the performance of 
11 turns on two stacked FT240-52 cores; it's the eleventh line on this 
chart:
http://www.karinya.net/g3txq/chokes/

And here's the detail:
http://www.karinya.net/g3txq/temp/52_mix.png

It achieves Rs>5000 Ohms from 10Mhz thru 28MHz, and Rs>8000 Ohms from 
12MHz thru 21MHz.

Steve G3TXQ