CAT6 cable by the roll

[Lennart Sorensen]

On Sat, May 26, 2007 at 12:34:57AM -0400, Jamon Camisso wrote:
> Here we are: http://www.connectworld.net/syscon/support.htm
> 
> "1. What is the difference between CAT-5, CAT-5e, CAT-6, CAT-7...
> 
> The Simple Answer:
> CAT-5 is rated to 100M
> CAT-5e is rated to 350M
> CAT-6 and CAT6e is rated to 550M or 1000M depending on your source
> CAT-7 is supposedly rated to 700M or presumably 1000M"
> 
> I hadn't heard of the 6e variety. What is so enhanced (and how) where 
> the e designator is present anyways?

So 5e should be more than plenty for Gbit ethernet.  Gbit runs 4 pairs,
each at 125MHz, with transfers on both clock edges, so 4 * 2 * 125MHz =
1Gbit/s.  Of course it both sends and receives on each pair so the
overlapping signals may cause interesting other frequencies, but 5e
should be plenty, and 6 even better.

--
Len Sorensen
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