Years ago Ed K4SB (then K4DJC) wrote an article for 73 about just what you
are asking about. He wanted to get his 80 meter Inverted V higher and he
used a mast (20 feet or so) above the beam. He used a universal joint the
top of the extension. The mast rotated but the joint stayed still so the
dipole did not move.
I wish I could relay more info but a reference was in the early ON4UN Low
Band Books. Ed said the main concern is that the beam stayed well within
the legs of the inverted V. More info if I can find it.
73 Dave K4JRB
----- Original Message -----
From: "Jack White" <firstname.lastname@example.org>
Sent: Wednesday, August 17, 2011 3:31 PM
Subject: [TowerTalk] Inverted vee mounted above HF Yagi
> 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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