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Re: Topband: 160m Sloping Vertical Antenna?

Subject: Re: Topband: 160m Sloping Vertical Antenna?
From: Jim Brown <>
Date: Wed, 24 Dec 2014 10:46:20 -0800
List-post: <">>
On Wed,12/24/2014 10:29 AM, Ed via Topband wrote:
Trying to figure out how to best utilize my 106' tower for 160m.  The tower 
sits on a small hill so the downside of the tower is sloping.  If I hang a wire 
off the top, I can bring the other end to the ground and feed it at the bottom. 
I can ran numerous radials from there.

That's exactly what I'm doing -- my tower is 115 ft with roughly 7 ft of mast above it and a 3-el SteppIR. I have sloping wires on two opposite sides, supported from the tower just below the rotator with a 10 ft section of 4-in PVC conduit. Each wire has its own set of 4 radials elevated about 18 ft. The tower, which is grounded, has a dozen or so radials laying on the ground.

With this configuration, the tower will act as a reflector, yielding about 6 dB front to back. How much GAIN you get will depend on your radial system and the quality of your soil. I started with radials elevated only a few feet, and gain was poor. On the advice of N6BT, I raised them and gain improved.

73, Jim K9YC
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