Thanks to all for your feedback, both on- and off-list. I have traced the
practice of using a short EHS leader at the tower back to the original
method of attaching the Phillystran to a thimble.
In the early days there were no Big Grips, so the Philly was terminated
using four cable clamps. These clamps created a potential snag point for
ropes used to haul items up the tower. Now that Big Grips are available,
the need for this leader has been eliminated.
Thanks again for all of the responses.
73, Keith NM5G
From: Dick Green WC1M [mailto:firstname.lastname@example.org]
Sent: Thursday, December 21, 2006 9:39 AM
Cc: 'Keith Dutson'; email@example.com
Subject: RE: [TowerTalk] Phillystran Guy Design
It would take a pretty big chunk of ice to damage Phillystran. Anything that
large would probably have to accumulate on the tower itself, probably on the
top plate. Again, I think the extra long Phyllistran guy grip would protect
against any big chunks falling off the tower. It wouldn't protect against
ice falling off long antenna elements or a long boom, but I don't think
those could be heavy enough to cause concern.
Like I said, once you start adding EHS at the top, you have the interaction
dilemma, which is the reason for using Phyllistran in the first place.
73, Dick WC1M
> -----Original Message-----
> From: Eric Scace K3NA [mailto:firstname.lastname@example.org]
> Sent: Thursday, December 21, 2006 4:16 AM
> To: email@example.com
> Cc: 'Keith Dutson'; firstname.lastname@example.org
> Subject: Re: [TowerTalk] Phillystran Guy Design
> Protection from ice shed off the structure in winter?
> on 06 Dec 21 Thu 00:25 Dick Green WC1M said the following:
> >>> What is the purpose of the EHS at the tower point?
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