Re mast height. Probably only a little higher than the turning radius of the
rotating antenna since you would prefer not ot have the included angle of
the inverted less than 90 degrees.
My thought was to fasten a short piece of rod vertically on the the top of
the mast as an axel for a small wheel with holes on opposite sides of the
perifery to hang insulators for the wires, and maybe even two more holes
(making holes every 90 degrees) for a couple of guys, or another antenna.
Gene / W2LU
----- Original Message -----
From: "David Gilbert" <firstname.lastname@example.org>
Sent: Wednesday, August 17, 2011 4:05 PM
Subject: Re: [TowerTalk] Inverted vee mounted above HF Yagi
> In my opinion the simplest way to accomplish that sort of thing is to
> suspend a horizontal rigid arm a meter or so long from the top of the
> mast using a short piece of rope. Fasten the trapped dipole to the
> rigid arm using clamps, zip ties, tape, or whatever. If long enough,
> the rope will wind itself around the mast as it turns but the leverage
> of the rigid arm should keep the trapped dipole from doing so.
> Dave AB7E
> On 8/17/2011 12:31 PM, Jack White wrote:
>> Hi Guys
>> I have a standard 60ft Versatower with a Yaesu G-1000 and bearing mounted
>> at the top, and just above this I have a Cushcraft A3WS (pic on QRZ). I
>> want to extend the stub mast about 20ft above the A3WS to support the
>> centre of a 160/80/40 trapped inverted vee. I'm looking for some type of
>> mount that will allow me to mount the centre of the inverted vee at the
>> top of the stub mast and remain fixed whilst the stub mast rotates.
>> Ideas/advice would be great.
>> 73, Jack G8DX
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