Every NBC-San Francisco announcer had stories to tell about encounters with the "announcer's delight". Network announcers - not the engineers - were responsible for pushing the correct series of buttons to direct programs to the right stations. Sometimes the wrong show or an inappropriate announcement went over the airwaves. Once an errant voice interrupted a speech by the Pope to announce, "this nonsense was brought to you by the National Broadcasting Company.
The photo at left shows the first incarnation of the NBC "Announcer's Delight" at 111 Sutter Street, about 1930. It was replaced by the unit at right a few years later, which was standard issue for all NBC studios. Engineer Oscar Berg demonstrates the new unit to Alice Tyler.
Click here to read Fred Krock's detailed description of the "Announcer's Delight" .