In a message dated 3/5/04 10:12:35 AM Pacific Standard Time, goneil@tds.net
writes:
> I am about to go up with a couple of towers using Rohn 25G that I have. I'm
> looking at maybe 60 to 70 feet height for both towers and they will be
> located approx 68' to 75' apart. I already have in mind that one tower
will
> get a tribander (A3S) just above the top of the tower and a 2 meter
vertical
> at the top of the mast. Still deciding what I want to put up on the
second
> tower. I was just curious as to how big an antenna the 25G would handle at
> a height of 60-70'?
Well, it depends on what your local windspeed rating is. What state and
county are you in? You can check yourself at <A
HREF="http://www.championradio.com";>www.championradio.com</A> under Tech Notes.
What does your Rohn book say? 70' of 25G @ 70 MPH is rated at 16.2 sq.ft.
of round membered antennas. It's only rated at 8.0 sq.ft. @ 110 MPH.
> Would it handle a 2 element 40 meter beam such as the
> CC XM240 or the High Gain 2 element 40?
Yep.
> Another question would be, assuming the 25G would handle such a
> beam, would it be worthwhile considering the height would only be 60-70
feet
> high?
Absolutely. You won't get a lot of low angled signals but you'll kick
butt domestically and still have fun working DX.
Cheers,
Steve K7LXC
TOWER TECH --
Professional tower services for commercial and amateur
888-833-3104
_______________________________________________
See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless Weather
Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any questions
and ask for Sherman, W2FLA.
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