monoprice.com
they are silly cheap for 5e and 6
On Thu, Jul 23, 2009 at 3:56 PM, Michael Butash<
michael@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@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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--
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Stephen
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