[amsat-bb] satellite flexible rotor-section coax question

[Norm n3ykf]

I use 9913F7. Works great.

There are a number of alternatives. Some of the stuff is great for a
year or two, then the jacket degrades. Brand names USUALLY get a
reliable product.

Hope to hear you on the air.

Norm n3ykf
On Mon, Aug 27, 2018 at 2:26 AM David J. Schmocker <kj9idave at charter.net> wrote:
>
> Hello:
> New to satellite communication I plan to construct a fixed station to work
> satellites.
>
> I am looking to identify best type of coaxial cable to run from my VHF/UHF
> antennas around az/el rotors to the preamplifier (located on the fixed
> mast/support).
>
> Most important coaxial cable requirements include:
>
> Highly Flexible (in upper midwest climate: temperatures range from ­15 deg
> to +100 degrees F) in Repeated (continuous) flexing
> Low Loss (while super flex Heliax would be my preference, it¹s not designed
> for repeated flexing this application sees
> Full shielding (preserve S/N and overall system noise figure).
>
> I can compare the loss values from manufacturer data sheets; my main
> interest here is to learn what type of cable has withstood the repeated
> (continuous) flexing required to work satellites?
>
> What cable type do you recommend based on your experience?   Thank you   73,
>
> Heliax Superflex?    Times Microwave LMR-600UF?   EcoFlex 15 Plus?   Belden
> 9913Flex?   Something else?
>
> David J. Schmocker, KJ9I
>
>
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