Common Mode Choke

Common Mode Choke

April 2020 this was so post to be a group project but unfortunately with COVID-19, I proceed ahead with the project myself.

The purpose of a “Common mode choke” is to reduce the interference of outside radio frequencies in the coax (transmission) line back to the radio.

This was a fun project, that used a Torrid Mix-31, some coax, and a 4″ x 4″ electrical box to inclose the project and keep the weather out.

Common mode choke, completed
Parts List
Parts required for common mode choke



What is Amateur Radio?

Upcoming Events

Attiny 85 Continuity Tester
Home Made 250W Dummy load

Monthly Get Together

Cancelled due to covid