[TowerTalk] Heights Tower and Spacing

[Dennis W0JX]

Tim:
Go to the Heights website: www.heightstower.com
 
See their first chart "A".  Your tower is most similar to the 72 foot, 31 sqft, @ 80 mph model. It depends a bit on the diameter of the tubes of the sections. It appears that the owner of the tower may have sustituted a 22" section for an 18 at the top.
 
Anyway, be careful about putting that WARC tribander up above the X-7. You need at least seven feet of spacing and 7 x 5 sq feet is like adding 35 square feet to the windload of the X-7. You will be overloading the tower.
 
If you choose to do this, I strongly advise guying the tower. I know this from personal experience when I lost a "Christmas tree stack" on top of a 72 foot Universal tower with 12 feet of mast out the top due to a 95 mph straight line wind.
 
73, Dennis W0JX/8
Milan, OH