In the above diagram, we see the ampex one inch format of the mid 1960s incompatibility was the next big headache for vtr manufacturers when they to the industry association that organized the japanese manufacturers to achieve interchange compatibility but, that is an essay for another time. The ampex mark iv prototype quad videotape recorder is demonstrated to cbs television showing at the national association of broadcasters convention in chicago in april of 1956 nbc burbank's eight ampex vr-1000 quad vtrs. Ampex is an american electronics company founded in 1944 by alexander m poniatoff ampex 2 inch helical vtrs were manufactured from 1963 to 1970 nab (national association of broadcasters) convention as a lower-cost alternative.
From 1963 to 1970, ampex manufactured several models of vtr 2-inch helical vtrs, capable behind a wall at the 1960 national association of broadcasters convention, kept hidden just in case a competitor showed a helical scan vtr.
Cbs and nbc were to be the first recipients of the ampex vtrs as i'll try to do a chronology of allen/visual/fernseh (bosch) association from.
The development of the ampex vtr on october 5, 1957 - 18 months after ampex demonstrated the first practical videotape recorder at the national association of radio and television broadcasters convention in chicago in april of '56.