April 14th, 1956 –
The first professional quality videotape machine was introduced by Ampex at the National Association of Broadcasters convention in Chicago. Magnetic videotape recording had been introduced early in the 1950s, but were considered unfeasible to replace kinescopes for broadcasting.
The machine was first used in a coast-to-coast network TV broadcast in the November 30, 1956 broadcast of Douglas Edwards and the News on CBS. For the next 20 years, quad videotape became the standard for the television industry.
The Haus of Dcaligari 