Which toroid for 4:1 unun?

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KL7MJ
Posts: 110
Joined: Mon May 15, 2023 9:06 pm

Which toroid for 4:1 unun?

Post by KL7MJ »

I am looking to build (yet another) 4:1 unun for a Rybakov antenna. Looking online, I see about half of the articles recommend a TX-2 toroid, and half recommend a TX-43.
I would think that the TX-2 toroid wouldn't be great for the hgher bands - if a powdered toroid were needed I would have expected a TX-6. Anyway, I'm wondering if there is any reason to choose the powdered toroid over the 43?

Mike, KL7MJ
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