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Re: [TowerTalk] LMR-600UF and variants

To: towertalk@contesting.com
Subject: Re: [TowerTalk] LMR-600UF and variants
From: Mac <libbysales@austin.rr.com>
Date: Fri, 13 Nov 2020 13:59:28 -0600
List-post: <mailto:towertalk@contesting.com>
I have and continue to use this same RFS cable Peter mentions and it is near flawless,  and my application is i have 4 runs at 100' + in daily use on a 589 crank up tower and including the radial loop between mast and tower tie point, i dont change to any other type feedline direct hook up to the antenna or balun all the way.. connectors are easy and reasonable in cost...

best:  mac/mc  w5mc

On 11/13/2020 1:10 PM, dj7ww@t-online.de wrote:
SCF12-50JFN by RFS is probably half that price.

https://www.rfsworld.com/WebSearchECat/datasheets/pdf/cache/SCF12-50JFN.pdf

73
Peter

-----Original Message-----
From: TowerTalk [mailto:towertalk-bounces@contesting.com] On Behalf Of Jim
Thomson
Sent: Freitag, 13. November 2020 19:46
To: kj6y--- via TowerTalk
Subject: [TowerTalk] LMR-600UF and variants

The  outer jacket on  LMR-600UF..and also LMR-400UF is  rubber.  The rubber
is very  soft...and prone to knicks  etc,  and is not abrasive proof.
It also is not  UV proof outdoors.   It would not be a good candidate for a
crank up tower  imo.

Someone mentioned the  600-UF  and  400-UF versions  made by  ABR
industries..and sold by HRO and others.
Their  UF version uses a non contaminating PVC outer jacket, similar to
RG-213.  Flexible,  UV proof, and abrasive proof.  Problem is,
a 100  ft length is listed on their site at a whopping  $640.95  for  100
feet...or  $6.41  per foot.

I checked out  Shireen  coax.... and their  version  of  600UF and  also
400UF  uses a.... Thermoplastic Elastomer  for the outer jacket.
http://www.shireeninc.com/wp-content/uploads/PDF-files/PDF-%20CABLE%20Spec%2
0Sheets/Coaxial%20Cables/Specs-RFC600-UF.pdf

Shireens   price for their   RFC-600UF  is just  $2.20  per foot.
https://www.shireeninc.com/osc/cables/coax-cable/rfc600uf   Thats  one third
the price of the  ABR version.

Shireens  thermoplastic  elastomer  is also known as  TPE.... are a class of
copolymers or a physical mix of polymers (usually a plastic and a rubber)
that consist of materials with both thermoplastic and elastomeric
properties.
This TPE  stuff is  supposed to be far more abrasive resistant  vs non
contaminating  PVC..and better for temp extremes, and also  V breakdown..and
its  also  UV  proof, and then some.

I contacted  Shireen, and they assured  me it was robust, and  superb for
UV,  in direct sunlight, outdoors.

They offered to send me a free sample to evaluate, so I took them up on
their kind offer.

Dunno why  Times Microwave  didn't figure out the  rubber jacket  problem on
their  UF cables...like  25 years ago.

The Shireen UF  version may well be the real answer  for a lot of folks like
myself.  Their RFC-600UF  is flexible..and low loss, handles power, which
the  VHF and UHF  folks  will  appreciate,
and handles  UV.   For general use, the ultra flex  would be easier to route
through conduits, bends etc.

This might all be old news,  but its new for me.

Jim  VE7RF
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