[RFI] Computer birdies

Mike hinrgdj at gmail.com
Wed Jun 27 16:03:51 PDT 2012

I feel the pain of the cable plant guy that has to terminate/punch down
those "deluxe-siamesed" gigabit cables in BIX blocks for a living wiring up
a telco room   :-(

Mike, K4EAR

> -----Original Message-----
> From: rfi-bounces at contesting.com [mailto:rfi-bounces at contesting.com] On
> Behalf Of Jim Brown
> Sent: Wednesday, June 27, 2012 5:30 PM
> To: rfi at contesting.com
> Subject: Re: [RFI] Computer birdies
> On 6/27/2012 2:57 PM, Roger (K8RI) wrote:
> > CAT 5 and 6 do not like tight turns, but 6 is far better than 5 with
> > dividers separating each pair.
> That's due to deformation of the twisted pairs, and yes, it can degrade
> rate. BUT -- Belden does CAT5/6/7 better. First, all of their Ethernet
> even the cheapest ones, use twisted pairs that are individually molded
> together, which serves to minimize that deformation.
> Their premium Ethernet cable, called Mediatwist, goes that even better,
> a special double oval shape that further rejects deformation and preserves
> separation between pairs. As a result, you can get away with tight turns
> little or no degradation. One of my professional colleagues turned me on
> Mediatwist about ten years ago when we first began using Ethernet for
> sophisticated audio signal distribution, and many of us specified it for
> reasons noted.
> 73, Jim K9YC
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