On 30 Dec 2016 at 21:50, Robert Nobis wrote:
>
> Ken,
>
> As I recall, the CAT5 or CAT6 specifications do not actually specify that
> each pair have a
> different number of twists per inch. They do specify that all pairs be less
> than 38mm per twist and
> that pair twist lengths shall be chosen to ensure compliance with the
> transmission requirements
> of the standard. In practice, I believe manufacturers are using different
> twists per inch on the wire
> pairs in order to meet the specifications for cross-talk.
Yes.
> Reference https://www.physicsforums.com/threads/cat6-versus-cat5.246719/
>
> At any rate, I don´t believe the original question was concerning Ethernet
> cable.
It wasn't.
The OP asked about an optimum twist for minimum noise. I have never seen any
such
specification.
The only specifications I know of which MAY be related was contained in
information I had
some years ago regarding CAT-5 cable.
Possibly that is contained in the link you provided.
Thus my statement.
Ken W7EKB
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