I do hope you won't object to much but I take exception to your title and hope you will change it.
Tesla didn't ever use Radio he used Wireless , In 1890 without amplifying valves,transistors,diodes or chips in fact all he had was wood and Brass he built a four channel proportionally controlled Boat . He certainly didn't -couldn't- use Radio theory. The crap Radio theory and technology which has been foisted on us is now having horrendous effects on us and wildlife. No bee's = no us https://youtu.be/oS6FGzh3ygw
kindest regards Duncan
How many more to be .threatened, abused murdered, Their research in the hands of evil corporations intent on total control ? http://dnp.s3.amazonaws.com/b/b9/suppressed.pdf
whilst we know little .. friends remember,
In the kingdom of the blind, the one-eyed man is king.