[TowerTalk] elevated short vertical dipole orquarterwave mono pole?

Steve Katz stevek at jmr.com
Fri Dec 3 13:36:26 EST 2004



> When I had a gamma matched Wilson 20M yagi, the common mode
> voltage on the coax was so high the coax actually arced
> between the tower leg and the coax shield. 
> 
> ::Tom, you posted something recently somewhere about LPDA mfrs
> recommending running the feedline along one of the excited booms and
> stuff.  Yep, Tennadyne recommends this.  I've also seen it recommended to
> run the coax inside one of the excited booms, where an LPDA's elements
> didn't go through the booms, leaving them hollow.  In lieu of this, which
> seems wrong to me too, how do you recommend routing xmsn line to an LPDA?
> "Hanging down from the feedpoint for 1/2WL" isn't going to cut it for most
> of us, that would be a 33' rotor loop...73 de Steve WB2WIK/6
> 
> 
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> 
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> Weather Stations", and lot's more.  Call Toll Free, 1-800-333-9041 with
> any questions and ask for Sherman, W2FLA.
> 
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