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Old 17th Jun 2012, 9:36 am   #7
Ray Cooper
Retired Dormant Member
 
Join Date: Jan 2007
Location: Porthmadog, Gwynedd, UK.
Posts: 199
Default Re: Video modulation question.

Quote:
Originally Posted by Synchrodyne View Post
... I learned that the French System L had been amended to accommodate NICAM stereo sound with a 5.85 MHz carrier. ... allowing the intercarrier technique to be used to recover the NICAM carrier.
That's very interesting, even though NICAM is not an FM system. Presumably a much larger level of 'vision-on-sound' would be acceptable for a NICAM carrier than for an FM one.

Anyway, we're discussing the early history here, are we not? Things like NICAM, and the complex integrated demodulator systems that you describe, would have had the 1930s pioneers reeling in disbelief.... they had to make it all work using a couple of glowing bottles...
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