[TowerTalk] Tower instalation.

[Stan or Patricia Griffiths]

I have successfully used 500D insulators on 1/4" cable, both the very flexible
wire rope type and the very stiff EHS type, but always using wire rope clips
(cable clamps) rather than guy grips.  Guy grips for use with 1/4" EHS require the
502 insulators instead of the 500D because they are larger and fit the radius of
the guys grips formed in them at the factory.

Stan
w7ni@teleport.com

K7LXC@aol.com wrote:

> In a message dated 11/25/00 1:28:58 PM Pacific Standard Time,
> fev@fibertel.com.ar writes:
>
> > My Question is if it is necessary to use Guys with insulators to be sure
> >  that they are not resonants and if it is, how I calculated the lenghts
> >  between insulators.
>
>     A chart of resonances is in the ARRL Antenna Book. Most guys in the US
> use 26 or 27 feet.
>
> >  What kind of insulators are the best in this use?
>
>     Ceramic. You can probably order some off the internet. Porcelain Products
> #500D is for cable up to 3/16 inch and #502 is for 1/4 inch.
>
> >  Is necessary to use insulators at all the guys levels, I will have 2 levels
> >  at 9 and 17mts.
>
>     The top one is the most important.
> >  Any has experience with Kevlar guys?
>
>     US made Phillystran is the choice of many competitive stations with very
> populated towers. It is a non-conductor and invisible to RF. Even with wire
> cables broken up with insulators, it's still a bunch of steel that your
> antenna is looking into.
>
> Cheers,    Steve   K7LXC
> Tower Tech
>
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