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    Calculating the coils of a transformer balun

    Hi! I'm preparing myself to go QRPp and now I'm doing my best to design and construct a balun to delete the so called I3 current that flows on the outside of the coaxial ground mesh. I've tried many, many internet sites, and I do have learned a lot about coils, inductance and baluns but no one...
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    a good Circuit-Maker-Tester-Runner...?

    Hi, everybody! I'm a newly retired guy who is devouting himself to study electronics, specially subjects related to radioamator. Can anyone advise me on... What is the best choice on a FREE software that makes a circuit, tests and runs it? I've tried a lot of them (that says to be free, but are...
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