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Re: [TowerTalk] Vertical on metal building

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Subject: Re: [TowerTalk] Vertical on metal building
From: Terry Conboy <>
Date: Sat, 02 Oct 2004 11:23:37 -0700
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At 07:48 PM 2004-10-01, Jim Miller WB5OXQ wrote:
I wonder how a vertical would perform on top of my office building? Sheet metal roof.
20' high at center, 18' at eves. 160'X80' dimensions. I have a tripod bolted at the center that used to be for a tv antenna. How would a typical hf vertical perform up there?
WB5OXQ, Jim in Waco

You might want to take a portable HF receiver up there and see what the RFI environment is like. We put a multiband vertical on the roof of a 10 story office building and found S9 + 20 dB noise on all bands, apparently from the HVAC controls. We gave up and took it down.

73 Terry

See:  for "Self Supporting Towers", "Wireless Weather 
Stations", and lot's more.  Call Toll Free, 1-800-333-9041 with any questions 
and ask for Sherman, W2FLA.

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