The following chart presents the results of impedance measurements made on a variety of common-mode choke implementations across the frequency range 1MHz to 30MHz. Amateur frequency allocations are indicated approximately by the vertical grey bands.
Chesapeake Amateur Radio Service
FCC Callsign: W4CAR – Chesapeake, Virginia USA
The following chart presents the results of impedance measurements made on a variety of common-mode choke implementations across the frequency range 1MHz to 30MHz. Amateur frequency allocations are indicated approximately by the vertical grey bands.
I use Common Mode chokes on my receive antennas. I videoed a demo here:
https://youtu.be/pZjA_aFv6Y0