GM3SEK Mains Filter

Interference received on HF radio is a real problem in todays urban environments and proliferation of cheap, unfiltered, Chinese electronics with untested fake CE markings.

Making your station as electromagnetically robust as possible to RF interference (both receiving and transmitting) is essential practice.

GM3SEK talked about the issue in detail at the RSGB conference in 2019. He has provided this information and the instructions to make an excellent mains filter on his page. (Link Below).

Clean Up Your Shack – 2019The online follow-up to my talk for the 2019 RSGB Convention. What’s new since 2015 Choke Chart and RadCom Plus article by Steve Hunt G3TXQ (SK) – see separate blog entry below Revised …

Below are some photos of my own construction of the GM3SEK Mains filter.