[TowerTalk] CC XM240 above a big Tribander

Dave Hachadorian k6ll.dave at gmail.com
Wed Apr 16 21:49:31 EDT 2014

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:

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 at 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
10/15/20M tribander without serious interaction?

Marsh, KA5M

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