[TowerTalk] Mounting distance Force 12 C3S and EF140

[ec1cwg at dxhunters.com]

----- Original Message ----- 
From: "Ellam, Timothy St. J." <Tellam at MCCARTHY.CA>
To: <towertalk at contesting.com>
Sent: Wednesday, August 23, 2006 9:29 PM
Subject: [TowerTalk] Mounting distance Force 12 C3S and EF140


>I am mounting a Force 12 40M rotatable dipole-EF140-above my existing
> F12 C3S. I am planning on a 3' to 4' separation. Will that be
> sufficient? Anyone with a similar installation?
>
> 73
>
> Tim VE6SH
> ===========================================================

Hello Tim,
I´m having an Optibeam OB10-3W with a 40 meters rotatable dipole at 4´ over 
it. Ain´t got any problem so far. Neither any degradation on lobes or 
changes on SWR has been appreciated here. FB on yagi is better than 
advertised on the manuals and the dipole has been one of my best purchases 
(regarding antennas). On the other hand, I had a wire dipole for 40 and 80 
meters located 15´ under the rotatable dipole and I noticed some changes on 
SWR when the rotatable was placed parallel to the wire dipole. There were 
some interaction among them that´s what I finally dismounted the wire 
antenna and put a long wire for 80. You´re going to set up a good 
installation though. Good luck. 73s!
EC1CT Fernando
E-mail: ec1cwg at dxhunters.com
URE & ARRL member