I have an additional question. I have a 150' cat5 cable hand made by my vendor. It doesn't work. A friend told me that with long runs there's a special wiring method than with short runs, in order to limit capacitance or inductance or some such. Anyone know about that?
That's nonsense -- If you're using quality cable, you haven't exceeded the ethernet length spec's, and the connectors are attached properly (i.e. don't untwist 10" of cable in front of the connector), a 150' cable length does not require any "special" construction techniques.
One thing I can tell you is that the non-working cable has only 4 conductors crimped. For long cables, should all 8 be crimped?
The twist ratio is different on each pair to minimize interference between pairs -- so the fact that only two pair are crimped is of no consequence unless you need the other pairs for something like POE equipment or a 1000baseT setup.
Did the cable ever work? If yes then you probably just have a busted wire, probably near one of the connectors. If it never worked then it's either built wrong or it's the wrong cable type (cross-over vs straight-thru) for whatever you're hooking up.
kj
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