A number that will reduce interaction substantially is 1/2 wave worth
of philly on the LOWEST frequency in use on top of the tower.
Others may tell you that going all philly except for the last 12 feet
or so to the ground is needed to clear up interaction with any of the
40 antennas, shortened or otherwise.
N4ZR has a particularly telling story about that. If he doesn't pick
up on this thread, you may want to post him direct.
73, Guy.
----- Original Message -----
From: "Dave Pomeroy" <dave@dpomeroy.com>
To: <towertalk@contesting.com>
Sent: Monday, October 28, 2002 2:38 AM
Subject: [Towertalk] Phillystran
> I guess I didn't make myself understood. I don't want to run
Phillystran
> from the top of tower to the ground. I just want to run it down so
my A3S
> is not affected by a steel guy. I just figured I would get enough
Phillystran
> to run down 20 or 30 feet from the top of the tower then steel for
the rest
> of the way. I want to upgrade the antenna sooner or later to either
a 5
> band quad or a 5 band LPDA, 20 meters through 10 meters. Thanks for
the
> info in advance.
>
>
>
> Dave Pomeroy K7DNP South East Washington
>
> _______________________________________________
> AN Wireless Self Supporting Towers at discounted prices,
> See http://www.mscomputer.com
>
> Wireless Weather Stations now $349.95. Call Toll Free,
> 888-333-9041 for additional information.
> _______________________________________________
> Towertalk mailing list
> Towertalk@contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk
>
|