Terry and group,
Just attach a small pipe of lets say 2 foot and 2" diameter near the mast/boom
plate.
Mount the rope at the boom and the top of this small pice of pipe.
Thats all! This will keep the beam in (almost) horizontal postion.
Peter
Internet DX-cluster PI4CC
telnet://213.10.48.91
00tlzivney@bsuvc.bsu.edu wrote:
> I have recently completed construction of a moderately large antenna -
> 48 foot boom with 5 elements for 20m and 2 heavily beefed up 402CD elements.
> This weighs about 250 pounds.
>
> The problem is that when I lift the boom with a sling, the antenna wants
> to roll around the boom so the elements are vertical. This has happened
> several times, regardless of how I adjust the slings. It is stable in
> the horizontal position, but only a slight tilt in either direction around
> the boom causes it to go vertical. All seven elements are mounted on
> the bottom of the boom. There is a boom strut above the boom with
> 3/16 EHS guys and real galvanized turnbuckles. I have measured that
> each element is indeed centered on the boom.
>
> I have never experienced this before. In the past I have trammed the
> antennas up so that the pull line would have kept the antenna with
> the proper attitude so I may not have noticed this tendency. This time,
> I was trying to pull the antenna up the side of the tower in a vertical
> pull and was going to pull the antenna away from the tower a moderate
> amount where necessary to clear lower antennas and perhaps temporily
> drop a guy (like I understand W9RE does). But this tendency to\
> go vertical means that I need over 44 feet of vertical clearance between
> antennas to get this sucker on the tower!
>
> Any ideas?
>
> Terry Zivney, N4TZ/9
>
> List Sponsor: Champion Radio Products - We'll be at the Dayton Hamvention
> with all of our safety equipment and other products. Stop by booth #559 and
> say hi.
> <A HREF="http://www.championradio.com";>www.ChampionRadio.com</A>
>
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List Sponsor: Champion Radio Products - We'll be at the Dayton Hamvention
with all of our safety equipment and other products. Stop by booth #559 and
say hi.
<A HREF="http://www.championradio.com";>www.ChampionRadio.com</A>
-----
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