[TenTec] OT Antennas and metal roofs

[Bob D.]

Dr Vic,

you may want to consider antenna change along with roof change. A trap
vertical on a metal roof has worked very well for me. Radials lying on the
roof provided plenty of coupling. Try an internet search to see what others
say about using a metal roof as a ground plane.


73, -bob ah7i
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Message: 6
Date: Fri, 18 Sep 2020 08:20:29 -0400
From: "Vic Klein" <vhklein at ptd.net>
To: <tentec at contesting.com>
Subject: [TenTec] OT Antennas and metal roofs
Message-ID: <001601d68db6$18fee2d0$4afca870$@net>
Content-Type: text/plain;       charset="us-ascii"

I am considering replacing my asphalt shingles with a metal roof, but I
wondered about interaction with HF antennas. I have a 160m OCFD with the
feed point just 6ft above the roof, and another than attaches to a mast
about 4' above at the edge. Does anyone have experience with the effects of
changing to a metal roof?

73, =Vic=
 WA4THR