Ferrites Versus Ethernet in the Ham Shack
Ferrites Versus Ethernet in the Ham Shack
For as useful as computers are in the modern ham shack, they also tend to be a strong source of unwanted radio frequency interference. Common wisdom says applying a few ferrite beads to things like…
I used shielded and properly grounded cat6, and even then I was seeing spurs and noise all over from 2m down. Granted the cat6 run was basically parallel to my attic antenna just about 5 ft from it for nearly the entire length.
I put one ferrite ring on both ends of the run with 5 turns through each and nearly entirely killed spurs I had been seeing all over the spectrum.
Are you running 100M ethernet? It creates large spurs every 61 kHz all the way up into UHF. I've gotten rid of almost all of my 100M equipment because of the RFI. I've just got a couple of things left to replace and 2 meters will be nice and quiet.