In a message dated 7/2/2007 8:19:22 A.M. Pacific Daylight Time,
towertalk-request@contesting.com writes:
> If you extend the tower with another 8' section, it is stepped in to a
smaller
face dimension. It is derated. They called it an HBX56, not HBDX...the 'D'
standing for heavy duty.
Right. I think there were 8 total sections and the way you mixed and
matched them determined the configuration; e.g. BX, HBX or HDBX. As a result
they had different windload ratings but all contained the 10-foot boomlength
limit.
Working on one is a meatgrinder to your feet. :-(
Cheers,
Steve K7LXC
TOWER TECH
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