[TowerTalk] Stacking Force 12 C3's

John Langdon jlangdon@outer.net
Mon, 25 Oct 1999 21:26:52 -0500


Best thing to do is model over your terrain. My experience is that best
triband compromise spacing between 27 and 30 feet.  Final spacing usually
dictated by mechanical issues.  With more than 30' spacing the ten meter
pattern shifts too much energy to higher angle lobes.  For max gain on 20,
greater a spacing works but patterns on 10 an d 15 are not good.

73 John N5CQ


-----Original Message-----
From: owner-towertalk@contesting.com
[mailto:owner-towertalk@contesting.com]On Behalf Of Paul Womble
Sent: Monday, October 25, 1999 5:30 PM
To: towertalk@contesting.com
Subject: [TowerTalk] Stacking Force 12 C3's


I will be working on 75' of Rohn 25 this weekend...getting it ready for
two Force 12 C 3's.  The top one will be at about 76'.  I will be side
mounting the lower one...but at what height will it work the best with
the top one?  Was thinking at about 36'.

Ideas?

Thanks
Paul AJ4Y

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