I don't think those concrete blocks have any good insulating value but other
than that, go for it. You have to figure out some type of common mode choke for
the feeders to the existing antennas, though. (That's my only advice. The rest
sounds good. You should arrange to put the tuner close to the mast. If you use
a coax and put the tuner in the shack you will get rather high losses unless
the mast is at resonance. (If it is, you probably don't need a tuner.)
Hans - N2JFS
-----Original Message-----
From: Edward via TowerTalk <towertalk@contesting.com>
To: towertalk <towertalk@contesting.com>
Sent: Tue, Dec 18, 2018 7:20 am
Subject: [TowerTalk] Rooftop tower as Vertical Antenna
Trying to be creative with my space/visual limitations. I have a Glen Martin
18’ tower/10’ mast, with tribander and V/UHF Discone, atop of a 35’ roof. The
tower legs are on concrete blocks, insulated from the roof.
Thinking about using the tower as a vertical. I have a remote tuner I can use
at the base. Can throw out a few resonant radials, too. Thoughts? Advice?
73,
Ed NI6S/7Z1ES
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