[Antennas] Building Full-Size 80m Vertical Query-Help. . . . .

[Chris Boone]

Stick the legs directly in concrete??? Usually works for me....If the tower
is to be properly held and supported at the side (and that's not easy as it
sounds), any insulating material (Nylon, Lexan, etc) which doesn't arc over
with the power level you plan running would do..OR find a ceramic base and
put a plate on the bottom of the HBX, stick it on the top of the ceramic and
do as the broadcast boys do...but this would require guying to be safe.
REMEMBER any attachments to the tower will need to be insulated....wood can
catch fire if at a high current point....be CAREFUL.

Chris
WB5ITT

-----Original Message-----
From: antennas-bounces at mailman.qth.net
[mailto:antennas-bounces at mailman.qth.net] On Behalf Of Aa9mo at aol.com
Sent: Friday, August 07, 2009 6:26 PM
To: Antennas at mailman.qth.net
Subject: [Antennas] Building Full-Size 80m Vertical Query-Help. . . . .

I was recently given four tower sections of Rohn HBX - - - the four  top 
sections, and would like to use them to build a full-size 80-meter
vertical.  
  Those four sections would make up the lower 32 feet  of the vertical, and 
I have more than enough aluminum tubing to make up a mast  for the top 
section of about 35 feet or so.
 
My question, is that I'd like to insulate the three base legs from ground,  
and I really can't spend much to do so.
I would really appreciate any and all suggesstions on how I might be able  
to reliably insulate the three legs, while providing a sound structure.
My plan is to solidly attach the tower sections to reinforced areas on a  
side of the house at about 15 and 24 feet, so that the tower sections can be

safely climbed.
 
Thanks for any help and consideration,
Susan, AA9MO