Quote:
Originally Posted by cbenham
Were there any 50 HZ VTRs or VCRs that were made for 405 line British TV?
I'd like to find one of either flavour for a project I'm working on. Actually any 50Hz unit will do.
I'd like to try to run one on 48Hz power and record CBS sequential color on it. There were no video tape machines in 1951 when CBS color was the US Standard. Cliff
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Power frequency is not related with the scanning frequency on VCRs. The motors use DC from the power supply, and their speed is controlled by the servo circuits. So the drum is going to keep running at 25 Hz no matter what the power frequency. Even if the CBS sync is similar to the EIA sync (I have to look it up) and the sync separator works OK, 24 Hz is 96% of 25 Hz, and I am not sure that the modern servos are designed to work with such a frequency offset. Even the cheapest cameras of the Betamax era had crystal-controlled sync generators, so the VCR designers would not expect the input vertical frequency to be ONE FULL Hz off.