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Old 12-01-2015, 11:07 PM
Electronic M's Avatar
Electronic M Electronic M is offline
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Location: Pewaukee/Delafield Wi
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WTB: chroma coils or board for CTC-19,20,24

I want to buy what I believe is the chroma osc. transformer (located left of the front middle 6GH8 in the rear board of a CTC-20, and right of a flathead screw adjustable trimmer capacitor). I also may need the transformer between the center front and center rear 6GH8 on that board.
The parts are circled in red in the picture below.


I don't believe I have a schematic for this set so I can't provide numbers for these parts presently.
I'll gladly take a whole board from a junker set if anyone has one, or just the transformers....

Help me get color back on this poor CTC-20 roundy!
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Old 12-01-2015, 11:40 PM
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Eric H Eric H is offline
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When I needed some Chroma Board coils for my CTC11 Moyers had them, reasonable too as I recall.


http://www.moyerelectronics.com/
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Old 12-01-2015, 11:49 PM
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Findm-Keepm Findm-Keepm is offline
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116539, 540, 541, 542, 543.... RCA sequentially numbered the parts on the CTC20, kinda like they did later on the CTC38.

Anyway, Google and Miller catalog shows the Miller 6053, 6054, 6055 and 6056 to be the chroma coils for the CTC20:

6053 - 116539 Chroma Osc Transformer Technotronic Dimensions
6054 - 116540 3.58 MHz Bandpass eBay or Talonix ONE OF THE CIRCLED ONES L23 in SAMS
6055 - 116541 Phase Det eBay or Talonix THE OTHER CIRCLED ONE L21 in Sams
6056 - 116542 ECO Transformer Technotronic Dimensions

The CTC20 was an odd, rare bird, conceived to be the bargain end of RCAs color line, possibly created to use up production parts they had in excess. Only a handful of models, all bottom end and hosting no real innovation.
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When fuses go to work, they quit!

Last edited by Findm-Keepm; 12-02-2015 at 08:51 AM. Reason: removed a comment about video
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Old 12-01-2015, 11:57 PM
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Findm-Keepm Findm-Keepm is offline
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Quote:
Originally Posted by Eric H View Post
When I needed some Chroma Board coils for my CTC11 Moyers had them, reasonable too as I recall.


http://www.moyerelectronics.com/
Moyers has been liquidating on eBay (mescosun)quite heavily - their last RCA flys are up on eBay only, for platinum prices. My request for a quote on a focus coil for my CTC16 went unanswered, and my second request was answered with an eBay listing that had ended - bought minutes before I could buy. Thankfully, i got one from a local shop, and even a spare (albeit Workman).
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USN RET (Avionics / Cal)
CET- Consumer Repair and Avionics ('88)
"Capacitor Cosmetologist since '79"

When fuses go to work, they quit!
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  #5  
Old 12-02-2015, 01:50 PM
dieseljeep dieseljeep is offline
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Quote:
Originally Posted by Findm-Keepm View Post
116539, 540, 541, 542, 543.... RCA sequentially numbered the parts on the CTC20, kinda like they did later on the CTC38.

Anyway, Google and Miller catalog shows the Miller 6053, 6054, 6055 and 6056 to be the chroma coils for the CTC20:

6053 - 116539 Chroma Osc Transformer Technotronic Dimensions
6054 - 116540 3.58 MHz Bandpass eBay or Talonix ONE OF THE CIRCLED ONES L23 in SAMS
6055 - 116541 Phase Det eBay or Talonix THE OTHER CIRCLED ONE L21 in Sams
6056 - 116542 ECO Transformer Technotronic Dimensions

The CTC20 was an odd, rare bird, conceived to be the bargain end of RCAs color line, possibly created to use up production parts they had in excess. Only a handful of models, all bottom end and hosting no real innovation.
A friend had one of those with one of RCA's TOL cabinets. I only saw one of those and that one had a CTC16X chassis.
Talk about a tuxedo on a pig.
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