[TowerTalk] Balun Recommendation

[TexasRF at aol.com]

Hi All, at the risk of really showing some ignorance, a question:
 
If the choke is doing a good job and located at the feedpoint, isn't the  
common mode circuit quite short?
 
Seems that the common mode current is the cause of the feed point imbalance 
 rather than the imbalance causing the common mode current. Chicken first 
or egg  first?
 
73,
Gerald K5GW
 
 
 
 
In a message dated 4/20/2012 2:43:29 A.M. Central Daylight Time,  
jim at audiosystemsgroup.com writes:

On  4/19/2012 7:12 PM, Jim Brown wrote:
> Bottom line -- dissipation in a  common mode choke on a COAX line is
> directly, and primarily related to  the IMBALANCE in the SYSTEM, the TX
> power, and the system  impedance.

and, VERY important, the electrical length of the common  mode circuit 
(that is, Vf approx =  0.99).

Jim
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