Passive Network Tap wiring examples


Here are photographs of a couple of taps I have built.

Pay careful attention to the routing of the wiring.  Ethernet cable is called 'twisted pair' for a reason.  The electrical characteristics of the signal require the proper twist of the wiring.  If it is disturbed too much, signal loss and interference are certain.  Therefore;  when punching the wires into the RJ45 jacks, the twist of the wiring must be maintained as closely as possible.

I haven't put the below designs to laboratory electrical tests, but since I haven't experienced any noticeable network degradation in my use, I suspect that signal loss and interference are minimal.

PNT-Mk1 Wiring example
PNT Mk1 wiring example

PNT Mk2 wiring example
PNT Mk2 wiring example

My personal preference is Mk2, which seems to keep the twist a bit tighter and cleaner.

Copyright © 2008  Mark Stingley