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[TowerTalk] Fw: Topband: Top Loading of Shunt-fed Tower

To: "(Reflector) TowerTalk" <towertalk@contesting.com>
Subject: [TowerTalk] Fw: Topband: Top Loading of Shunt-fed Tower
From: "Jerry Keller - K3BZ" <k3bz@arrl.net>
Date: Wed, 9 Feb 2005 17:13:51 -0500
List-post: <mailto:towertalk@contesting.com>
Good question. I sure don't know the answer.... maybe one of our resident gurus might venture one. Without pulling the antenna downj to take a look, I'm not even sure how close the boom gets to the motor circuits.

73, Jerry K3BZ

----- Original Message ----- From: "N2TK, Tony" <tony.kaz@verizon.net>
To: "'Jerry Keller - K3BZ'" <k3bz@arrl.net>
Sent: Wednesday, February 09, 2005 4:30 PM
Subject: RE: Topband: Top Loading of Shunt-fed Tower



Hi Jerry,
I assume the StepIR uses an aluminum boom. I wonder if there is there any
chance of arc-over from the boom to the motor circuits with high voltage
induced at the top of the tower/boom when loading on 160M?
N2TK, Tony



-----Original Message-----
From: topband-bounces@contesting.com
[mailto:topband-bounces@contesting.com]On Behalf Of Jerry Keller - K3BZ
Sent: Wednesday, February 09, 2005 3:11 PM
To: Topband Reflector
Subject: Topband: Top Loading of Shunt-fed Tower

I'm considering shunt feeding of a 45 foot freestanding tower with a 3L
SteppIR on top for 160 and
80. The SteppIR is NOT electrically connected; the tower IS grounded,,, each
leg has a 32 feet of #4
solid copper with ground rods at 16 and 32 feet.  The possibility of using
the SteppIR as a tunable
cap is interesting... has anyone tried this?  If so, have you run full power
thru it?  Did you use a
relay to connect the SteppIR?
73,  Jerry K3BZ


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