[TowerTalk] Rohn HDBX 48' concrete base

[WA3GIN in King George, VA]

Consider this...today you might be thinking of a 6sq ft antenna...next year 
you might be thinking of a 15sq fto antenna...you can always go to a larger 
antenna, you can't upgrade the base if you skimp on it the first time.

If you don't want to spend the money on concrete you can use pea gravel with 
the proper base fixture. Then if yo move you can jack the base out of the 
gravel fairly easily.

Good Luck,
dave
wa3gin
----- Original Message ----- 
From: "Paul Ferguson" <Paul at PaulFerguson.us>
To: <towertalk at contesting.com>
Sent: Saturday, August 27, 2005 9:02 PM
Subject: [TowerTalk] Rohn HDBX 48' concrete base


> The Rohn HDBX 48 foot self-supporting tower is built now by Thomas
> Shelby & Company, Inc. using the original ROHN tooling. See:
> http://www.criticaltowers.com/BX%20Series%20Towers/Web%20Pages/BX%20Series%20Tower%20Page.htm
>
> The tower specs are also available at this site. The HDBX 48
> specification is 18 square feet of antenna and 360 thrust pounds. The
> maximum size antenna boom is stated to be 10 feet.
>
> The foundation for the base stubs is concrete measuring 5.75 feet x
> 5.75 feet x 4 feet deep = 4.9 cubic yards of concrete.
>
> If one plans to only use the HDBX 48 with antennas that do not exceed
> 6 square feet, has anyone done calculations to see if a smaller
> concrete base can be used?
>
> Paul Ferguson
> K5ESW
> Raleigh, NC
> _______________________________________________
>
> 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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