Curious as to why y'all don't use the LMR-400-DB or LMR-xxx-DB cable
INTENDED for exterior use?
______________________
Clay Autery, KY5G
MONTAC Enterprises
(318) 518-1389
On 8/23/2017 3:04 PM, Mike & Becca Krzystyniak wrote:
> Bill etal,
>
> I had some LMR-600-UF going to several UHF antennas on a rotating tower.
> It showed signs of sun damage and the outer jacket crinkle cracked on me
> too.
> The salesman warned me upfront it might not make 10 years.
>
> But even cracked with some exposure to the shield, the integrity of the coax
> (loss & Z) was still in spec.
> IIRC, I actually found a footnote on the LMR site that UF was not intended
> for outdoors, but it will survive for a number of years.
>
> Bill, YMMV but the Jafa-Tek specs are not the same as LMR-xxx.
> But for jumpers it's probably in that bucket called diminishing returns.
>
> 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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