The rise and fall of AM radio

From Pittsburgh-

Two months later, according to KDKA sources, a live broadcast from Calvary Episcopal Church in Shadyside became the world's first regularly scheduled church service and the first remote pickup.
In the choir loft were Westinghouse engineers -- one of them Jewish, another Catholic -- dressed in surplices for anonymity.

Edwin Jan van Etten, rector of Calvary, was quoted as saying, "Even now, as I think of their presence there, it seems to me that they symbolize the real universality of radio religion."
Early adopters listened to radio broadcasts via fairly complicated receiver units sold by Westinghouse for $65 to $125. But home use really took off in 1921 when KDKA designed a small (6 inches by 6 inches by 7 inches) wooden box housing a crystal set.


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