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balun

Choke Baluns for F6KOP

Fred C (W6BSD)

Info This article was also posted in French on my club's website F6KOP The objective of a choke balun is to reduce RF current flowing on the outside of the coaxial cable, thereby improving the symmetry of the radiation pattern and suppressing radio-frequency interference (RFI). The target values...

Common Mode Current Choke

Fred C (W6BSD)

A couple of weekends ago, I took my trapped vertical antenna apart to clean it up, ensure every component was in good working condition, and fine-tune it. While working on the antenna, I noticed that the Common Mode Current choke box had a crack due to the hot California summer sun making the ABS1...