CTC-4 Director 21

[Phil Nelson]

Do you have a restored B/W set that works well, that you could use to practice alignment (again, doing the setup and looking at the traces, without changing adjustments)? The setup wouldn't be identical, but maybe that would help you get the hang of things.

I had reached a similar point with my CTC-4 and I took a stab at building a video preamp, which turned out to be not as simple as I hoped. This old thread has more details:

http://www.videokarma.org/showthread...259995&page=23

The last color bars that you posted look pretty good, apart from that one anomaly. What does the TV look like when you view regular content, such as a DVD or cable TV? Sometimes things that look less-than-perfect in test patterns don't interfere much with everyday viewing.

Phil Nelson
Phil's Old Radios
https://antiqueradio.org/index.html

[SwizzyMan]

Originally Posted by Phil Nelson

Do you have a restored B/W set that works well, that you could use to practice alignment (again, doing the setup and looking at the traces, without changing adjustments)? The setup wouldn't be identical, but maybe that would help you get the hang of things.

I had reached a similar point with my CTC-4 and I took a stab at building a video preamp, which turned out to be not as simple as I hoped. This old thread has more details:

http://www.videokarma.org/showthread...259995&page=23

The last color bars that you posted look pretty good, apart from that one anomaly. What does the TV look like when you view regular content, such as a DVD or cable TV? Sometimes things that look less-than-perfect in test patterns don't interfere much with everyday viewing.

Phil Nelson
Phil's Old Radios
https://antiqueradio.org/index.html

Still isnt great while viewing programs. Ghosting and the picture looks overdriven which may be to the fact that it is hooked directly up to the cable box. I don't think IF is an option for me now. If it really needs to be done I guess I can try it.

[old_coot88]

As Phil suggested, practice alignment on a BW set. You don't wanta jump on a full dress Harley without being proficient on a more basic bike.

[Phil Nelson]

Regarding a video preamp, I just updated my CTC-4 article with a new section at the end, describing what I built:

https://antiqueradio.org/RCACTC-4ColorTelevision.htm

My preamp didn't work, due in part to a wiring mistake. I fixed that and messed around a little more, and then pushed the whole thing aside because I was burned out on the project.

Anyhow, I have to believe that the basic design, taken from the 1956 article in RCA Broadcast News, will work if someone takes the time to build it correctly.

Phil Nelson
Phil's Old Radios
https://antiqueradio.org/index.html

[SwizzyMan]

Originally Posted by Phil Nelson

Regarding a video preamp, I just updated my CTC-4 article with a new section at the end, describing what I built:

https://antiqueradio.org/RCACTC-4ColorTelevision.htm

My preamp didn't work, due in part to a wiring mistake. I fixed that and messed around a little more, and then pushed the whole thing aside because I was burned out on the project.

Anyhow, I have to believe that the basic design, taken from the 1956 article in RCA Broadcast News, will work if someone takes the time to build it correctly.

Phil Nelson
Phil's Old Radios
https://antiqueradio.org/index.html

Wow, that will definetly be project... Hell, I'd pay someone to build me one.