[RFI] 160M/Modem problem

Aaron Kreider aaron at campusactivism.org
Tue Dec 18 19:17:53 EST 2012

It isn't default, but I think there is shielded Cat 6.

This one is called Cat 6a.
Screened Shielded Twisted Pair



On 12/18/2012 1:04 AM, Jim Brown wrote:
> On 12/17/2012 9:09 PM, Aaron Kreider wrote:
>> I recently bought some Cat 6 cables as my understanding is that 
>> they've got more shielding. 
> CAT5, CAT6, and all variations thereof consists of four very good 
> twisted pairs, each twisted at a different rate to minimize crosstalk 
> from one pair to another.  It is NOT shielded.
> Twisted pair cable, in general, is excellent in minimizing the pickup 
> of all forms of noise, whether it be hum, buzz, or RFI.  It is equally 
> effective in reducing the radiation of noise from that wiring.
> If you have any problems with RFI or noise involving telephone wiring, 
> or loudspeaker wiring, the FIRST thing I would do is to make sure that 
> all wiring is twisted pair.  CAT5/6/7 is far too small for loudspeaker 
> wiring, but it is excellent for telephone lines, including those 
> carrying any form of DSL.
> 73, Jim K9YC.

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