[TowerTalk] Rohn 25 and stacking questions

[K7LXC at aol.com]

In a message dated 3/20/2007 9:18:42 A.M. Pacific Daylight Time,  
towertalk-request at contesting.com writes:

>  I am working on getting my "phase 2" antenna projects  ready.In the south 
they say"fixing to get fixing"!I want to space my  Skyhawks about 40 feet 
apart on Rohn 25.Rohn's specs say no more then 35  feet between guys.So I 
would like to put up an 80 foot tower of Rohn 25.If  I guy it every 20 
feet,20,40,60 and 80 feet that should work as long as I  put the guy points 
far enough away so as to not run into the guys with the  bottom antenna.I 
think I might also be a bit over Rohns windload allowance  but I only see 
antenna loads at the top not spread over the tower.Any help  there?I will be 
placing the tower where if it would fall it wouldn't fall  on anything 
else.The reason I want to use Rohn 25 is because I have a  bunch of it,don't 
want to buy 45.I will use a "swinging gate" for the  bottom antenna.Will use 
a Comtek Stack-2 yagi matcher.Any thing I'm  missing? 

        Brown County is a 90 MPH  windspeed zone and 80' of 25G is rated at 
9.5 square feet - the  Skyhawk is 8.5 sq.ft. each. Rohn guyed towers are pretty 
forgiving and  I don't think your proposed installation will be fatal but it 
is pushing the  capacity significantly. Be sure to keep your homeowner's 
insurance paid  up.
 
Cheers,
Steve     K7LXC
TOWER TECH -
Professional tower services for hams 



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