[TowerTalk] Using Belden 9913 on a crankup?

[Bill VanAlstyne]

Hey Todd,

You know, I kinda thought the initial answers you got to this question the first
time (26 April) were pretty unequivocal.  :-)  To wit.:

"9913 is not a good cable to use where flexing is encountered.
The center conductor can migrate off center and it needs to
make wide radius bends if long life is expected." - K8RI

"I would not use 9913 on a crankup tower. It's way too stiff and
will bow out. Over time, the constant bending will cause the
center conductor to migrate, affecting the cable impedance."
- WC1M

Nobody wrote in to say they thought it was a good idea. Flexible cables like
Belden 9913F7, LMR-400, and RF Bury-FLEX were recommended for this kind of
application.

Did you want some more opinions? OK, well, maybe you'll get some more! I'll
start by adding my two cents: No, it's not very workable. You oughta use a
flexible cable like Belden 9913F7, LMR-400, or RF Bury-FLEX.

There you go!  ;-)

Bill / W5WVO




coulter at bellsouth.net wrote:
> Could somebody tell me if Belden 9913(not 9913 flex)is usable on a
> crankup
> tower. What I am interested in, is if it is bendable enough when the
> tower is
> cranked down or will it bow out too much? Should I go to a more
> flexable cable
> for the run up the tower, or is it workable? This is for a 51 ft.
> crankup.
> Thanks for your help.
>
>                             Todd
>                             N4JRZ
>
>
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