Re: Apple Graphics Tablet

[Alex Freed <alex_news@alexfreed.com>]

On 6/19/2012 4:46 PM, Michael J. Mahon wrote:
> The RCA 630TS, the reference design for the first commercial set, used a
> PLL. Of course, based on pulling a crystal oscillator, as were all color TV
> sets.

Looks like the 630TS did not have a color carrier recovery PLL for a 
simple reason that it was a black and white set from 1946 :)

http://antiqueradio.org/RCA630TSTelevision.htm

The tube V24 "Horiz. oscillator control" suggests that it probably had a 
PLL for the horizontal stage. So you are right here.

-Alex.