Quote:
Originally Posted by Robert Grant
Yes.
The noise burst creeps upward because the field rate was changed to accommodate NTSC compatible color television.
|
Yes and no. It was part of the color standard, but for a dumb reason. IIRC the color signal did not play nice with the sound sections of some older RCA models (RCA had kept their sound circuits primitive too long because of their cheapskate patent use policy) and so to 'fix it' they shifted the color carrier frequency slightly which HAD to be mathematically locked to the scan rate...So the scan rates got dragged along for the ride.
It was within tolerance of sync on receivers of the day so no one cared, but once VTRs became big and time code for tape was in the works engineers cursed at the scan rate change endlessly.