[TowerTalk] REPOST: 6m Moxon and F12 C3-SS Spacing?

[john at kk9a.com]

The only certain way to see the interaction is to model the system.  Most of 
us have to live with some interaction and often it's not that bad, maybe a 
little less F/B or slightly higher SWR.   I really don't believe that the 6m 
beam will degrade the tribander much or at all with reasonable spacing, even 
with both antennas pointing in the same direction.  If you already have the 
tribander up, install the 6m beam and try it.

John KK9A



To: towertalk at contesting.com
Subject: [TowerTalk] REPOST: 6m Moxon and F12 C3-SS Spacing?
From: Eric Rosenberg
Date: Thu, 16 Jul 2009 09:48:11 -0400


My tribander (a Force 12 C3-SS) sits on a roof tower approx. 6 ft above the
peak of my roof.

I'd like to add a Ariane Arrays (now-defunct) *6 METER* 2-el Moxon
above my tribander
and below the horizontal element of my 160m wire that runs almost directly
over it.

My question:  What's the stacking distance?  Ariane said 3 feet if I off set
it 90 degrees from tribander.  Others have said 15 feet regardless.

When dealing with a roof tower, this is a HUGE difference!

My primary concern is the potential degradation of the tribander's
performance.

73 & Thanks,
Eric W3DQ
Washington, DC
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