I know that we can minimize RFI / noise pickup by minimizing the common mode currents on our feed lines. And, that we want the choke to reduce common mode current to near zero. I have seen **differen
I didn't see my favorite. The 1:1 Flux coupled transformer. I use these as "ground-breakers" in the shack on the end of a long coax cable to a low-gain rx-only antenna. This style was particularly ef
I don't have quantitative measurements, but some experiences that may help: 1) CM Probes: I've built a number of these using clamp-on ferrites meant for EMI remediation. I usually wind four to six si