[TowerTalk] Crappy LMR600
Roger (K8RI) on TT
K8RI-on-TowerTalk at tm.net
Wed Aug 23 23:04:33 EDT 2017
Over 20 years, I've never seen jacket deterioration on LMR cables. UF
OTOH didn't last 6 years used as pigtails and rotator loops.
15 plus years for UF is really difficult to imagine. That exceeds the
manufacturer's projected life (10 yrs) and by 50% and experienced life
(5 to 6 years) by 200 to 400%
73, Roger (K8RI)
On 8/23/2017 Wednesday 10:16 PM, J. Hunt via TowerTalk wrote:
> I've read some posts of late of LMR400 and LMR600 outer jacket deterioration over the last several years.
> I am curious if the manufactured outer jacket formula has changed over the years.
>
> I have some LMR400 ultra-flex on my personal radio tower - installed 15+ years ago at the rotor flex point, and it has not cracked or dried up yet.
>
> Any information would be greatly appreciated from product made 15 years ago.... until of recent years.
>
> Thanks,
> James
> ki5dq
> --------------------------------------------
> On Wed, 8/23/17, <john at kk9a.com> wrote:
>
> Subject: Re: [TowerTalk] Crappy LMR600
> To: towertalk at contesting.com
> Date: Wednesday, August 23, 2017, 9:07 PM
>
> I use FSJ4 for outdoor jumpers however I cannot imagine that it would be good for a rotating antennas. It
> is not flexible like RG213 and the PVC jacket is somewhat thin.
>
> John KK9A
>
>
> To: "'Tower Talk'" <towertalk at contesting.com>
> Subject: Re: [TowerTalk] Crappy LMR600
> From: "Mike & Becca Krzystyniak" <k9mk at flash.net>
> Date: Wed, 23 Aug 2017 15:04:59 -0500
> List-post: <mailto:towertalk at contesting.com> Bill etal,
>
>
> I have also used SuperFlex in rotor loops but over time I had one crack along the annular shield rings, opening
> the shield.
> Not sure if that was a one off, or something attributable to the SuperFlex construction.
> At the time I decided to replaced them all but I am reconsidering SF vs. UF.
>
> Mike K9MK
>
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--
73
Roger (K8RI)
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