End fed and common mode

Since an end fed wire is the best antenna that I can have at my location, I’m trying to understand better how it works, so that I can hopefully improve its performance. It does “work”, but the term is relative. It kills my computer USB keyboard sometimes, which I believe is due to common mode current.

Subsequently, I thought I would implement a 1:1 unun common choke, but I don’t know where. I read online that a good place is between the radio and the 9:1 unun, right before the 9:1. In…

End fed and common mode For the full article, https://forums.qrz.com/index.php?threads/end-fed-and-common-mode.594924/

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