If it were me I'd talk to the guys at freenet-antennas.com
Last I checked they're all techies/physicists - no sales guys. They
don't have what you want, but they'd probably have a fair few ideas on
where you could get it, or what a suitable alternative would be.

On Fri, Jun 6, 2008 at 8:33 AM, James Gray <[EMAIL PROTECTED]> wrote:
> Hi All,
>
> I have a non-networking project that requires category 5/5e STP (not "UTP"!!
> - I *need* the shielded variety).  No big deal, except I can't find anywhere
> that will sell it to me in arbitrary lengths.  They all want to provide
> either a patch cable (that isn't long enough) or a bulk roll (>100m
> usually).  I need approximately 15m - second hand is fine, stranded or solid
> core is not important; either will suffice.
>
> For the curious; I'm re-wiring an electronic anemometer which has problems
> with interference from low frequency EMI.  The system uses a high impedance,
> low voltage signalling technique over 2 pair "telephone" type cable (no
> shielding).  The combination of no shielding and the low voltage+high
> impedance basically turns the cable run into a giant static discharge
> detector/antenna!  This manifests itself with erroneous wind speed readings
> (usually high readings as the static/EMI results in additional pulses on the
> wire). The CAT5 STP will be used such that the shielded sheath, and striped
> wire from each pair will all be earthed, leaving the solid colour wire from
> each pair to replace the existing wires from the "telephone" cable.
>
> Other people have made this modification to their anemometers (same model as
> mine) and it works flawlessly :)  So please help out another geek: CAT5 STP
> anyone?!?
>
> Cheers,
>
> James
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