[Antennas] All steel 26ga roof
PaulKB8N at aol.com
PaulKB8N at aol.com
Tue Sep 20 11:45:21 EDT 2005
My experience with metal roofs has been entirely positive! The best low
antenna I ever used was a folded dipole for 40M strung in inverted Vee fashion
over the roof of a house trailer. The peak of the Vee was no more than 8 feet
above the roof and the ends were no more than a foot above the roof. This
proved to be the best 40M antenna I've ever had. I could work Europe from
Alabama barefoot two hours before sunset.
This worked so well that I used the same antenna from Okinawa Japan
suspended in inverted vee fashion over a steel reinforced concrete roof. Again, it
worked great. In the 1986 CQWW, I worked several stateside stations on 40M
running QRP.
I also had wire antennas above corrugated steel roofs at a Air Force work
site and never experienced any of the noise problems that have been noted by
others, but then I was using horizontal wire antennas. The question I would
ask is why even use a roof mounted vertical, when a multiband inverted vee feed
with ladder line through a tuner will outperform it in spades with only a
modest (10') center support?
My recommendation, try it! If it works keep it up, if not take it down!
73, Paul
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