[Antennas] All steel 26ga roof

Tue Sep 20 09:41:51 EDT 2005

Thanks: Interesting points. Was going to mount my AP-8A on my 
steel roofed storage/carport. Think I will leave it where it is as 
it works OK.
At 11:07 PM 9/16/2005 -0500, J Setcer wrote:
>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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Carole & 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
All incoming and outgoing messages are
checked for virus using AVG version 7.0.344
and Virus database (475) 267.11.1/104 updated 09/16/2005
Get your copy of this excellent virus checker at
http://www.grisoft.com/us/us_index.php
-- 
No virus found in this outgoing message.
Checked by AVG Anti-Virus.
Version: 7.0.344 / Virus Database: 267.11.3/106 - Release Date: 9/19/2005