On 10/27/2011 12:03 AM, Grant Saviers wrote:
> The solid center conductor cables are spec'd for about 20 bends at the
> specified radius.
On LMR-400 that's less than a foot. If you coil the stuff around the
tower like they do with the TV remote vans it'll last forever "If it
doesn't get caught on something". It also works well for rotator loops
of 3 turns of 18" or more laying on a flat plate.
OTOH as has already been mentioned, BuryFlex(TM) is a much better choice
for crank ups.
I've been told that the failure mode is particularly
> annoying - intermittent opens. So depending on your crankup up/down
> plans and how well you flake the cable for large radius bending, you may
> have a reasonable life with a solid center coax.
> 9913-F7 is almost identical to LMR400 so why not use it or BuryFlex for
> the up the tower run? For 2m, 70cm and higher it might be worth playing
> with LDF4 or bigger.
> Grant KZ1W
> On 10/26/2011 6:58 PM, krishna kanakasapapathi wrote:
>> Howdie folks,
>> I am installing the DB18 on a 75ft crankup. Have a roll of LMR400, the
>> solid center conductor type.
>> I thought i might just ask before i cut the cable from the roll. Any
>> possible issues with
>> using the LMR400 on a crankup?
>> I have arms mounted on each of the 3 sections to keep the cables away
>> from the telescoping sections.
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