[Towertalk] Mixing EHS and Phillystran

[Jim White]

Years ago at the beginning of the "relector" revolution where we shared our
experiences I seem to remember K3LR informing the group to beware of those
short lengths of "real" guy wire near the tower...sometimes they might act
in conjunction to act as dipoles/re-radiators....seem to remember Tim saying
that 5 foot was a good length to allow you to stay away from the Philly
while climbing - you never know what tool dangling from ones belt might
knick the Philly...but not so long as to be a problem at HF....think this
was based on his having problems with pattern/SWR variance while rotating a
20 meter antenna he worked the problem backwards to that "little guy wire"
antenna right next to the yagi mounted above a guy point....

How's your memory crew?

73,

Jim, K4OJ

My favorite site:
http://www.qsl.net/fqp


----- Original Message -----
From: <n4kg@juno.com>
To: <TOWERTALK@CONTESTING.COM>
Sent: Tuesday, April 16, 2002 6:21 PM
Subject: Re: [Towertalk] Mixing EHS and Phillystran


> N4ZR has recommended at least 1/2 WL of insulated guy
> (of the Lowest Frequency Antenna on the tower )
> between the top to the tower and a continuous
> conductive guy wire.  That's 35 ft for 20M.
> I'd go with at least 50' for the top guy and maybe
> even the next lower guy (or ALL guys).
>
> Tom  N4KG
>
>
> On Tue, 16 Apr 2002  Sylvan Katz <jskatz@sk.sympatico.ca> writes:
> > Hi all
> >
> > I need to insulate the top section of my upper guys from my tower to
> > eliminate some tower-antenna interaction I think I am getting with
> > my C31XR.
> > Is it okay to use a few feet of Phillystran for the top section and
> > EHS for  the rest?
> > If it is then what is best method to use to couple the EHS
> > and the  Phillystran?
> > Or is there a simpler inexpensive solution to isolating  the EHS
> > from the tower?
> >
>
> .. sylvan  (VE5ZX)
>
> ________________________________________________________________
> GET INTERNET ACCESS FROM JUNO!
> Juno offers FREE or PREMIUM Internet access for less!
> Join Juno today!  For your FREE software, visit:
> http://dl.www.juno.com/get/web/.
> _______________________________________________
> Towertalk mailing list
> Towertalk@contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk