[Antennas] All steel 26ga roof

[J Setcer]

I agree that the roof would make a NOISEY antenna because of the
nails/screws and the joints.
But my experience has shown that the roof may not even make a decent
reflector.  You certainly will NOT be able to put antennas in the attic!

I used a BTV-4 (or btv-5) on a steel roof  a few years ago.  Even with all
that steel I still got much better results by elevating the antenna-- the
height of a tripod (maybe 5 ft)-- and adding sloping radials -- two per
band -- from the bottom of the antenna to the corners/edges of the roof.

also, a few years ago I put the same antenna on the crows nest @12 ft above
a 25 ft. X 25 ft steel mesh floor of a 112 ft tall tower.  The antenna was
LOUSY until I put two radials per band from the bottom of the antenna
slopping to the railing around the tower.

also interesting (at least to me).... We put a Force 12 C-3 just above the
crows nest.  We put the BTV-4 above the beam.  The vertical worked pretty
well on..... you guessed it.... 10, 15, & 20 meters.  Didn't work well on 40
meters(the 4th band).
-----------------------
None of these pictures show the vertical antenna.  But they do show the
tower, the deck, the c-3, etc.

73, J. Setcer, N5QJ

http://www.geocities.com/kc5bry/colonymtn/n5qjfixingc3.jpg

http://www.geocities.com/kc5bry/colonymtn/71501/towerdeck.JPG

http://www.geocities.com/kc5bry/colonymtn/71501/towerdeck3.JPG

http://www.geocities.com/kc5bry/colonymtn/71501/crowsnest.JPG

http://www.geocities.com/kc5bry/colonymtn/n5qjfixingc3.jpg

----- Original Message -----
From: "Bob Wilder" <bwils at bellsouth.net>
To: <antennas at mailman.qth.net>
Sent: Thursday, September 15, 2005 3:32 PM
Subject: [Antennas] All steel 26ga roof


> Am replacing my hurricane damaged roof with an all steel 26ga roof.  What
> are my chances of using this as a radiating HF antenna?
>
> Bob Wilder, AF2HD
> 6032 Idlemoore Court
> Theodore, AL 36582-4117
> 251-653-5274
> Asst USAF State MARS Director- Alabama
> Alabama State Training Director,AFA2HD
> Trustee LST-325 ARC WW2LST
>
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