Hi Jeff:
I have the F12 620/340 at 75 feet and a 4BA at 85 feet. I am definitely
seeing interaction between the 40 meter and 15 meter elements. The
resonance on 15 meters is way low. F12 recommends 12-15 feet separation.
Some have turned the antennas 90 degrees different with success. Me - for
now, I just use a tuner. I may at some point raise/turn the 4BA in the
spring and or shorten the driven element for 15/17 meters.
Jamie
WB4YDL
> From: Jeffrey Okamitsu <x703jko@starpower.net>
To: <towertalk@contesting.com>
> Date: Wed, 28 Nov 2001 20:13:19 -0500
> To: towertalk@contesting.com, force12talk@qth.com
> Subject: [TowerTalk] Force 12 620/340
>
>
> Thanks for reading this.
>
> I'll be putting up a F12 620/349 along with a WARC7 and a 415/410 on a
> 140 feet of 45G. I'd like to put at least two of these on the mast with
> the remaining antenna on a ring rotor further down.
>
> Question: does anyone have experience with respect to proximity of the
> 620/340 with either of the other two antennas? Is 6 feet of seperation
> enough? or should I spring for another ring-rotor and put the WARC7 and
> the 415/410 further down the tower?
>
> 73...Jeff, KN2R
>
>
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>
List Sponsored by AN Wireless: AN Wireless handles Rohn tower systems,
Trylon Titan towers, coax, hardline and more. Also check out our self
supporting towers up to 100 feet for under $1500!! http://www.anwireless.com
-----
FAQ on WWW: http://www.contesting.com/FAQ/towertalk
Submissions: towertalk@contesting.com
Administrative requests: towertalk-REQUEST@contesting.com
Problems: owner-towertalk@contesting.com
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