By the start of the 1970s the Ampex VR1000s and RCA TR22s that had started off Television Recording had passed into history. The VR2000s, first introduced at the beginning of 1966, had taken over and were followed by VR1200s, VR2000Bs, an AVR1 and, in 1975, by AVR2s. The RCA TR22s were supereced by the TR70C. And, at the end of the decade, we saw the first of the C format machines, the VPR1 - sadly no pictures.
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