[TowerTalk] rohn hbx56 & 31 foot long 432 antenna

[K7LXC]

In a message dated 98-03-22 12:37:04 EST, K7LXC@aol.com writes:

>  First of all, Yellow Medicine County is an 85 MPH windspeed zone.
>  
>        The HBX56 is rated at 10 sq.ft. at 70 MPH. Since you'll be using the
>  BX-2 section as the top section, it's better than the smaller BX-1 but not 
> as
>  sturdy as the larger BX-3. 

     Let me elaborate on the windspeed situation. At 70.7 MPH, the wind
pressure is 20.0 pounds per square foot. At 85 (actually 86.6) MPH, the wind
pressure is 50% more at 30 psf. Now you're really pushing the envelope on your
BX 'glorified tv tower'.

      Go for a 'real' tower. In the meantime, keep your homeowner's insurance
paid-up.

73,  Steve  K7LXC     

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