Another RCA CT-100 discovery B8001599

[Penthode]

I knocked together a CT-100 ballast resistor replacement on the weekend. It plugs into the ballast socket.

I bought 350 ohm 50w and 800 ohm 25w chassis mount resistors and attached to a heatsink I bought on Amazon for another project. The octal male plug was from a relay and was mounted on an angle so that when plugged into the CTC2 chassis, the fins sit upward.

I used fiber glass spaghetti on heat resistant wire to the socket. The aluminum bracket attaching the heatsink to the octal plug was fashioned from a scrap aluminum plate or bracket my my scrap bin.

It will plug into the rear facing CTC2 ballast socket above the power transformer and will deflect and isolate the heat source away from the 15GP22.

The chassis is complete apart from two peaking coils. This evening with the chassis on the bench and everything connected except for the CRT, I plan to insert the tubes and provide the power up of the chassis in in over 40 years.