Quote:
Originally Posted by stromberg6
My CTC-136B is wide-band, manufactured in 1986, and has the I-Q chipset. I'll look at the SAMS to see about the single-ended I delay line. I'm getting much from the topic of the "glow" that may be due to grid contamination. I'll see if I can find an hour or more later tonight to fire up my 4, and look for the glow. Thanks for all the info!
Kevin
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Just poking around and saw this thread. I was designing televisions at RCA in Indianapolis when the CTC-136 was made. While the Sanyo IC has I/Q demodulation it did not have the wide I channel that was only used in the CTC-131 and CTC-132. I seem to remember the short lived CTC-133 used the same RCA designed chip but the wide I feature was not incorporated. The CTC-121 was the first 25" in the space of a 19" but did not have the Wide I processing..
In those days RCA designed all the IC's in their receivers. I designed the deflection processor in the CTC-146. RCA in Sommerville was the first source and Hitachi was the second source. I remember having to tweak some resistors in the 32 h input circuit as hitachi's transistors behaved a little
different than RCA's.
The CTC-131 chip set included a wide I demodulator and a kine drive IC with auto kine bias. Those were the days....
The CTC-135/136 was a low end chassis designed by RCA Taiwan and overseen by Indianapolis. It used a Sanyo chip that was modified to meet RCA's specs.
I wish i could remember why the Wide I was removed from the CTC-133. Seems there was some reason.. I may have some of those IC's around if I can find them!