At 11:04 AM 10/28/97 -0500, you wrote:
>In a message dated 97-10-25 09:23:39 EDT, wb4mnf@atl.org writes:
>
><< I'm scouting around for boom material for my 3 ele 40
> and was wondering if anyone is using the popular 4130 mast
> alloy for boom material and if it is a bad idea. >>
>
> Ouch! This will be a rotator and tower killer. The Effective Moment of an
>antenna on those parts is the product of the weight and turning radius. A
>MUCH heavier antenna will play havoc with the tower integrity. A 3L 40M
>antenna will be 2-300 pounds anyway. It's a major antenna and rigging
>challenge and not for the faint hearted.
>
>73, Steve K7LXC
Did the old SWAN beams use a steel boom. I think they did and they were
heavy but they lasted a long time in the air. Smaller diameter boom if I
remember correctly.
Oh well, maybe it wasn't a good idea after all. SWAN is out of the biz.... HMMM
Lee
k0wa@southwind.net
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