Lutheran hour. Walter was first speaker in 1930.1906, first broadcast was him on a violin playing oh holy night. Harding Cox election.
Early on, NBC gave free air time to "the three religions on America; Catholic, prodestant, and Jewish. We had to share with ....cabin, a prodestant broadcast. Another radio station, CBS, gave us a spot Thursday nights. They almost stopped it. The people in New York said the sermons could only be 15 minutes long. Mail started pouring in due to the novelty of a sermon Midwest. Eventually the people at CBS said, you can speak as long as you want, due to the public support.

The Lutheran Hour was off the air for a few years, but the idea whenever lost. 1931 to 1935.

The announcer introducing the Lutheran Hour was the Lone Ranger's voice for a while.  

It was the largest religious mail receiver radio broadcast from 1935 on... (if I heard right)

Electronic transmissions were used to broadcast the Lutheran Hour overseas to the Armed Forces to meet the need.

Walter died right before being able to consider the Lutheran Hour for TV.