[Towertalk] Quad Support

[Jim White]

the lumber will go bad! seems like your best bet would be to suspend from
another yagi's boom with pulleys at each end allowing lowering of the loop
for tuning!  Why not build up a killer trussed long boom ten meter beam and
have the pulleys on the underside of the boom. If  I were building it up I
would consider using triangular loops - this is what K4XS does on his 4
element 75 meter quads...(he supports the tops from phillystran running
between his towers)

K4OJ



----- Original Message -----
From: "Tim Makins, EI8IC" <contesting@eircom.net>
To: "TowerTalk" <towertalk@contesting.com>
Sent: Sunday, June 09, 2002 8:30 AM
Subject: [Towertalk] Quad Support


> I was thinking of suspending 2 40m diamond-configuration quad loops from
the
> top of an 80'  steel scaffold-pole mast.
>
> Option 1 is put a  horizontal 20' length of timber with central pivot at
the
> top of the mast, thus spacing the loops correctly, and allowing them to be
> 'walked around' to the desired direction.
>
> Option 2 is to mount the tops of both loops on insulators at the top of
the
> mast, and pull the sides and bottoms of the loops away from the mast,
> pyramid-fashion.
>
> What are the pros and cons of both options, and which do you prefer for
best
> DX performance ?
>
> 73s Tim EI8IC
> www.qsl.net/ei8ic/
> Irish and Budget Contesting
> Last Updated: 07Jun2002
>
>
>
>
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