cat-5

[Stephen]

monoprice.com

they are silly cheap for 5e and 6



On Thu, Jul 23, 2009 at 3:56 PM, Michael Butash<michael at butash.net> wrote:
> Mike,
>
>  Trick is the wires have to be twisted throughout to minimize
> interference, doing so at the ends won't help.  Newer standards like
> cat6 and higher have internal dividers to reduce crosstalk between
> twisted pairs even, and cat7 makes use of individually shielded twisted
> pairs to all together remove possibility of crosstalk (assuming you
> terminate them properly too).  Consistency is the key for minimizing
> physical modulation problems on the line.  You're fighting an uphill
> battle trying to coerce cat3 to work for networking, best relegate it
> analog voice only.
>
>  I'm with Trent that you're probably money ahead to just buy some cat5e
> (at least) somewhere, especially if you need patch cables.  Or if you
> have some time, you find good deals on cable from ebay or other online
> retailers, far better than going to fry's electronics and overpaying for
> their crap.  I sniped an expensive 1000ft roll of high-quality bertek
> cat6 off ebay for 80 bucks shipped a while ago, so you can find good
> deals.  I bought several 1000ft rolls of generic shielded cat6 recently
> for 150 each shipped, but this is far more quality than you probably
> need, and I've seen them cheaper since.  Roughly a hundred bucks should
> buy you a 1000ft roll of unshielded cat6 that'll last you ages, and
> futureproof since gigabit gear has come down in price significantly.  At
> least until your friends find out you have bulk cable.  :)
>
> -mb
>
>
> On Thu, 2009-07-23 at 18:18 -0400, mike havens wrote:
>> Will  twisting it at the ends  (so the tswists go under the sheath)
>> fix this?
>>
>> On Thu, Jul 23, 2009 at 4:55 PM, Technomage
>> <technomage.hawke at gmail.com> wrote:
>>         mike havens wrote:
>>         > all I need it for is patch cables... and telephone cables.
>>         Why doesn't
>>         > crosstalk affect the telephone signal?
>>         >
>>         >
>>
>>         most PSTN signalling is of low bandwidth (especially on the
>>         "last mile"
>>         run). now DSL is kind of an
>>         exception to this (except you need line filters on your phones
>>         to keep
>>         from hearing the "static" of the modem.
>>
>>         you can probably get away with 10BaseT signalling on cat 3,
>>         but because
>>         of how the cable itself is wound
>>         (turns per foot, etc) your max length will be very limited.
>>         100BaseT is
>>         not recommended at all owing to
>>         the large about of bandwidth used (typically greated that 200
>>         Mhz wide)
>>         and cat 3 cable will
>>         act as an antenna at lengths longer than about 18 inches.
>>
>>
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>>
>>
>> --
>> :-)~MIKE~(-:
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-- 
A mouse trap, placed on top of your alarm clock, will prevent you from
rolling over and going back to sleep after you hit the snooze button.

Stephen