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Re: [TowerTalk] Antennas for SO2R station

To: <towertalk@contesting.com>
Subject: Re: [TowerTalk] Antennas for SO2R station
From: <john@kk9a.com>
Date: Mon, 1 Mar 2021 15:31:42 -0500
List-post: <mailto:towertalk@contesting.com>
I have never seen anyone put two SteppIRs on the same mast but the 7 ft
separation is more than adequate for operating on two bands simultaneously.
One of my homebrew 20m beams also has a commercial 40m beam mounted on the
same boom and there is no interference except on the harmonic.

John KK9A  

WW3S wrote:

I live on a small lot, 80x180, in a subdivision....I have a 50ft tower 
with a 3L Steppir on it.....I had planned on putting another Steppir 2L 
about 7 ft above the tribander.....BUT......my current SO2R setup I'm 
using a Hytower as the second antenna.....the rigs are a 7610 and 
7300.....I have 5B4AGN bandpass filters on both rigs.....I'm already 
having interference issues between the rigs now, so I think moving a 
second antenna to the same mast is asking for more trouble. Just 
wondering if anyone uses 2 antennas on the same mast for SO2R? Also, is 
the 7300 maybe a problem? I heard that radio generates a lot of phase 
noise on TX, not so good in SO2R applications. Anyway, planning for some 
tower maintenance this summer, and looking for suggestions on optimizing 
the station for SO2R....

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