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Schafer automation system
The first Schafer Automation System, installed at KGEE(AM) in Bakersfield, California in 1956, was dubbed the "blue-wire job" because all of the wiring in it was blue, its inventor, Paul Schafer said. "The owner wanted to program his station all night long without a person being there. I used a couple of Seeburg record player changers to play 45s and several Ampex reel decks for commercials and we were in business," Schafer said.
== In the beginning ==
Originally, commercials had to be dubbed sequentially to play back in the right order. Before long, Schafer, with the help of Chief Engineer Jim Harford, designed a better system. The "spotter" used Ampex reel-to-reel tape decks that could fast forward and rewind to count windows cut from the tape in order to locate specific commercials. "We removed about an inch of the oxide from the tape every minute. The 'windows' were then counted by the automation system as they passed between a lamp and a photocell to find the right commercial to play," Schafer said.
The Schafer Automation System used a series of relays and stepping switches and a clock that allowed programmers to back-time music to join network newscasts without having to fade the music. Schafer said the automation system consisted of two racks: one held the "brain," another contained three tape reel-to-reel decks. The Seeburg record player changers held 100 records each.
Programming the system was limited at the beginning. The front control panel consisted of a series of pins to allow programmers to change a sequence or repeat it, Schafer said. "They could set up a pattern by screwing pins into any of the many holes in the clock. Typically this would be each 15 or 30 minutes to play station breaks," Schafer said.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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