I'm installing a active antenna, part of the low noise protocol is keep noise out of the system. I want to install a common mode choke, I'm using the one here as a starting point.
I don't have that toroid but I have many potcores. The recommended core is Amidon 75 (J) material. I have Ferroxcube 3C81, 3B7, 3D3, 4C6 and Magnetics K material. I don't know what characteristics are desirable for a common mode choke. Just want to have a clean DC line with no ingress. Any helpful thoughts?