Many thanks, Frank D., for that link to FM history. Very interesting.

As implied in the article, cranking up the power is easy for FM. All that is
needed is a Class C rf amp. No linear required.

It reminds me... Back in 1947, I visited the then new FM station in Ontario,
CA. Because no hi-fi audio transformers were available, the Chief built the
entire audio system using RC coupling.

Bill, K5BY
ex-W6BMM