It is not radio, but television: the earliest example is M. L'Herbier's
_L'inhumaine_ (1924). Maybe this might also help.
Boris Vidovic
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"Contrariwise," continued Tweedledee, "if it was so, it might be; and if it
were so, it would be: but as it isn't, it ain't. That's logic."

Lewis Carroll, Through the Looking-Glass

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