[TriLUG] Looking for surplus base-2 ethernet cable

[sholton]

Brian Henning wrote:

>Anyhow, since James asked, the intended use is relocating the antennas for a
>wireless mic receiver at my church.  They're very simple whip antennas that
>connect to the back of the receiver with BNC connectors.

This isn't digital, this is analog. You've got to match the impedance
or you'll wind up creating serious problems in the system.

Probably not "let the smoke out' problems, but 'doesn't work very well'
kind of problems at least.

Thinnet is 50 ohms impedance. A very similar co-ax often used for
wiring cable TV is 75 ohm impedance. You can intermix the two without
blowing any equipment, but if you start to see ghosting
it's likely because you have signal relfecting off the lower-to-
higher interface.  Fuzzies come from the higher-to-lower splices.

There may be markings on the cable you can use to find out
what impedance you need, but it's better to check the equipment
manual in case the cable currently being used is incorrect 
already (almost sounds like it...)

-- 
Innovation is a wildflower; you cannot choose where it will blossom,
you can only choose where it won't.

sholton at mindspring.com