[ChrisW6ATV]

I did some more research so I can connect my CK3000 to my CTC-5 chassis, and later possibly a CTC-4.

First, I did confirm that the CVL1 ballast/convergence load is just what TV Engineer said it was, basically a 150 ohm resistor between pins 1 and 2. Then, I studied the schematics for the RCA chassis from CTC-16X back to the CTC-2B to see what would be required to use the CK3000 with the pre-CTC-7 chassis. The older models each have different methods of connecting their convergence yokes to their chassis (none match each other, nor do any match the CTC-7 and later). All three of the older 21" chassis (CTC-2B, 4, and 5) use the same connector and wiring for their deflection yokes (that does not match the CTC-7 and later).

The deflection yoke on the '2B/'4/'5 has an octal plug and cable that appears to match up with the newer models using common-color yoke wires like this: Pin 1 = yellow, pin 2 = black (or yellow/black), pin 5 = red, pin 8 = blue. I may have pins 5 and 8 backwards; I will not know until I make the adapter cable I am planning to use.

Regarding the convergence yoke and load, it appears that the older chassis do not even need to have a load used when the yoke is disconnected. All three of the older models have their convergence circuitry on the chassis (or the separate CTC-3 with the CTC-2B), so the function of the load is already accomplished by the various pots that remain in-circuit even when the convergence yoke is unplugged.

I will make an update post when I have tried the CK3000 with my CTC-5.