Tuesday Night at the Radio! (Arthur C. Clarke Memorial Edition)

These two Arthur C. Clarke short stories are from Mindwebs, a sci-fi series that ran in the late 70's on WHA in Madison, Wisconsin.

"The Nine Billion Names Of God" (9 September 1978);

and

"The Sentinel" (28 January 1979).

"Nine Billion Names of God" is preceded by another (very) short story, "Test."