[TowerTalk] LMR600 up to the top of tower ?

David Aslin G3WGN david at aslinvc.com
Sun Aug 2 12:12:36 EDT 2015


Steve, 
Lots of experience here with Ecoflex 10, none so far with Ecoflex 15; also lots of experience with its sister products Aircell 5 and Aircell 7 for DXpedition and portable use (see TX6G.com for example).
All are recommended for ease of use, lifetime (see below) and loss vs weight characteristics (especially the 5 & 7mm types).
Ecoflex-10 is my go-to for rotator loops.  I only have one run (of 100m/328ft) that has been exposed to weather for 5 years (including 2 in full California sunshine), but so far no signs of breakdown or moisture entry.  I use compression PL259s with my preferred tape wrap on it.  How it will look after 10 years - I'll let you know...
Usual disclaimer - no relationship with manufacturer or distributor, just a satisfied customer.
HTH
73, David G3WGN  M6O  WJ6O

-----Original Message-----
From: Steve Sacco NN4X [mailto:nn4x at embarqmail.com] 
Sent: 02 August 2015 04:26
To: towertalk at contesting.com
Subject: Re: [TowerTalk] LMR600 up to the top of tower ?

Does anyone have first-hand experience with Ecoflex?  It looks quite good.

http://vibroplex.com/contents/en-us/d38.html


73,
Steve
NN4X


On 8/1/2015 9:24 PM, towertalk-request at contesting.com wrote:
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 >    1. Re: [Bulk] Re:  LMR600 up to the top of tower ? (Robert Harmon)

 > ----------------------------------------------------------------------
 >
 > Message: 1
 > Date: Sat, 1 Aug 2015 10:43:41 -0700
 > From: Robert Harmon <k6uj at pacbell.net>  > To: "<towertalk at contesting.com>" <towertalk at contesting.com>  > Subject: Re: [TowerTalk] [Bulk] Re:  LMR600 up to the top of tower ?
 > Message-ID: <0979DB51-1243-4D32-B278-A6B939DCC0B8 at pacbell.net>
 > Content-Type: text/plain; charset=us-ascii  >  > Grant,  >  >  I will have a stack on my HDX589 consisting of  40/20  on the bottom and a new 17/15/12/10 on top.
 >  I see your point on LMR600UF for the swing arm loops not holding up.
 >  So lets see if I have your arrangement right.  You are running 7/8 and 1/2 LDF from the shack to the tower top section,  >  then they connect to Buryflex for the swing arm loops for rotation, and the Buryflex cables continue up the mast and connect to the  >  beams.  Is that correct ?
 >
 > Bob
 > K6UJ
 >
 >
 >
 >
 >> On Aug 1, 2015, at 7:16 AM, Grant Saviers <grants2 at pacbell.net> wrote:
 >>
 >> I second Roger's comment.  Coax I removed from a large stack were
7/8 hardline to LMR600UF swing arm loops, and the 600 was in bad shape after 7 years.  Several cuts, one complete tear of the braid, water inside.  I'm using Buryflex service loops and with 7/8 LDF5 for 20/15/10 and 1/2 LDF4 80 & 40  have less than 0.8db loss Yagi feedpoint to amp on all bands.  Buryflex is very tough stuff and flexible enough for service loops.  With the long runs (140' tower, 125' to shack) in hardline the slight additional loss for the short service loop is within the loss budget.
 >>
 >> Grant KZ1W




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