[QuadList] NTSC: 500 or...? (was 'Re: FCC and NTSC')

[James Snyder]

Shai,

I've seen the pictures in the 1953 NTSC report 
(which we have at the Library of Congress) from 
the original NTSC tests in Washington DC in 1950 
and 1953.  I seriously doubt the moire pattern 
issue would have been limited to 500 B+W sets.

James

------------------------------------------------
James Snyder
Senior Systems Administrator
Library of Congress -
   National Audio Visual Conservation Center (NAVCC)
Motion Picture, Broadcasting & Recorded Sound Division (MBRS)
Packard Campus for Audio Visual Conservation
http://www.loc.gov/avconservation/packard/


>Does anyone remember who it was about 3-4 years 
>ago that actually did the math how many TV sets 
>might have had a real problem with the beat came 
>up with about 500 sets in the whole of the US of 
>A? I don't remember who it was but I remember I 
>had such a stomach ache from laughing my !@#$ 
>off. All this crap you guys had to deal with for 
>decades over something that might have affected 
>500 sets.
>Still chuckling
>Shai
>
>·™ý¯ÈÍÝ23/12/13Ý9:04 PM, 
>–ÈËÂËÝ<mailto:quadlist-request at quadvideotapegroup.com>quadlist-request at quadvideotapegroup.com:
>
>>There was a potential harmful beat from the 
>>3.58 MHz (Color) and the 4.5Mhz (Audio)in the 
>>TX. This 920KHZ fell on an energy band and 
>>would have caused a problem as audio changed. 
>>Since the FCC said no to moving the 4.5MHz by 
>>even just a bit the only thing left to move a 
>>bit was the 15,750 line rate, Thus the vert 
>>moved a bit.
>>I have read that we could have left 15,750 (and 
>>vert)  alone; new color TX's could have been 
>>4.505 MHZ and existing B&WTX's  could have been 
>>adjusted to 4.05 and existing B&W sets would 
>>have tuned the audio ok. I wonder is that true?
>>If so we would have far less formats and no D.F. time code.
>>
>
>--
>Cheers
>Shai Drori
>Timeless Recordings
><mailto:srdbx at netvision.net.il>srdbx at netvision.net.il
>··¯Î”¨
>˜ÈÝ“¯Â¯È
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>
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