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Re: [TowerTalk] CC XM240 above a big Tribander

To: "reflector Towertalk" <towertalk@contesting.com>
Subject: Re: [TowerTalk] CC XM240 above a big Tribander
From: "Dave Hachadorian" <k6ll.dave@gmail.com>
Reply-to: Dave Hachadorian <k6ll.dave@gmail.com>
Date: Wed, 16 Apr 2014 18:49:31 -0700
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>
My XM240 is six feet above a KT-34XA.  The booms are aligned.  It
works for me.

After you get the antennas installed, run a f/b ratio test on the
tribander.  Front-to-back ratio is easy to measure, and is the
most sensitive test for adverse interaction.  Here is more info:
http://lists.contesting.com/archives//html/Towertalk/2006-08/msg00634.html

I just noticed an error in the last paragraph of that 2006
posting.  The last paragraph should read,
"Sometimes just changing the length of the 40-2CD's feedline, or
shorting/opening its feedline when the antenna is not being
used will solve interaction problems."

Dave Hachadorian, K6LL
Yuma, AZ

-----Original Message----- From: Marsh Stewart
Sent: Wednesday, April 16, 2014 5:15 PM
To: towertalk@contesting.com
Subject: [TowerTalk] CC XM240 above a big Tribander

How close vertically on the same mast can a new CC XM240 be to a
big
10/15/20M tribander without serious interaction?

Marsh, KA5M
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