[TowerTalk] Fwd: Rooftop tower as Vertical Antenna

[Hans Hammarquist]

 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 at contesting.com>
To: towertalk <towertalk at 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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