[TowerTalk] Fwd: Fwd: 4:1 balun questions KT-34XA

[Jim Brown]

On 10/29/2014 6:22 PM, Hans Hammarquist via TowerTalk wrote:
> Maybe I remember the length wrong. I am not at my shack right now. I do remember using 25 feet of coax. Do to the capacitive coupling between the turns, the Z goes down for higher frequencies.
>

L and C form a parallel resonant circuit with fairly high Q. There is 
not "less inductance," there is resonance.

In the tutorial I referenced, I showed why a simply coil of coax is a 
lousy common mode choke.

73, Jim K9YC