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

[Jim Brown <jim@audiosystemsgroup.com>]

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
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