CTC models

[jeyurkon]

I'm trying to figure out which RCA set my OIC gave me back around 1971. At the time I picked up a copy of "Fundamentals of Television" by Walter H. Buchsbaum. It included a CTC-16 schematic, but I believe that the set I had was more than one number earlier. I'm certain it wasn't the CTC-16, but it was close enough that I was able to use it to repair the set.

The CTC-12, CTC-15, and CTC-16 layouts are similar enough to the chassis I remember. Were there ever CTC-13 and CTC-14 chassis produced? If was never a CTC-13 or 14 then I think the set I had must have been a CTC-12. I'm pretty certain that it had a glass CRT. Though I was able to carry the set a short ways by myself, barely.

Can anyone tell me the release dates of the CTC-12 through CTC-16 models?

John

[Steve D.]

Model year introduction may be earlier by a few months.

CTC-12 1963
CTC-15 1964
CTC-16 1965
CTC-16X 1966/67

There was no CTC-13/14 chassis produced by RCA.

-Steve D.

[miniman82]

But there was a CTC-3!

[ceebee23]

What was the last true RCA color set? CTCxxx?

[ChrisW6ATV]

There was one more RCA roundie, the CTC-20.

[Eric H]

Originally Posted by miniman82

But there was a CTC-3!

There was? I thought they went from CTC2 to CTC4
I have a pretty good idea why they skipped 13.

[miniman82]

Yep!

It's actually a tricky question you can throw at people- the CTC-3A is a convergence chassis, part of the CTC-2B/21-CT-55. A transformer and a bunch of pots is all it is.

[Steve D.]

Originally Posted by ChrisW6ATV

There was one more RCA roundie, the CTC-20.

My bad. Thanks Chris. I got to the CTC17 on the list which was a 25" rectangular and stopped there.
I'll edit my post.

-Steve D.

[Mal Fuller]

Originally Posted by Eric H

There was? I thought they went from CTC2 to CTC4
I have a pretty good idea why they skipped 13.

I believe the CTC-3 designation was assigned to the convergence panel used with the CTC-2B chassis.

[zenithfan1]

There was also a CTC13, it was experimental and only 6 were made IIRC.

[old_coot88]

Originally Posted by zenithfan1

There was also a CTC13, it was experimental and only 6 were made IIRC.

Sorta like the DC-5, the 'forgotten Douglas'.

[kx250rider]

There were also a few weird CTCs that were limited-runs designed for 32VDC operation. I worked on a couple of them. One was, if I recall, a CTC-14. Looked like a 12. It basically was a conventional chassis but had a 32VDC-117AC dynamotor. Zenith did that as late as the 80s, with a 32VDC version of the System III. It was identical except for the 9-160-05/06 board being a 9-160-FRM. That one was actually a different board altogether.

Charles

[Kevin Kuehn]

Were those 32vdc sets used on aircraft, or very remote rural areas?

[Findm-Keepm]

Originally Posted by ceebee23

What was the last true RCA color set? CTCxxx?

The highest CTC numbered chassis I've seen is the CTC203, then Thomson went off with the ATCXXX and M134C, the ITCXXX sets and so on.

Now as to "true" RCA-engineered/RCA produced, I dunno. The service seminar folks never explained what was RCA/GE vs Thomson vs Taiwan/China (TCL) produced. With their flat screen stuff, anybody's guess.

Any RCA Indianapolis folks here?
Cheers,

[David Roper]

Yeah, that's really bizarre when you go back in time and look at when farm lighting plants apparently peaked. The 1923 Sears catalog offered almost all appliances in 32 volt and 110 volt versions, but already by 1927 the catalog reflects a serious trend toward phasing out 32 volt items.

32 volt farm radios continued to be made through the 1930s and there were even a very few offered in the immediate postwar period. I have never seen a single schematic for a 32 volt DC TV set. If there wasn't enough demand in the 50s, well, by the 80s demand would have been effectively (if not literally) zero.

Up into the decade just passed you could still get 32 volt light bulbs, but apparently the only real demand was a marine application and the price per bulb was outrageous. To my knowledge they are no longer offered anywhere at any price.