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Somehow I can't see it as anything but an insulated tool for prodding energized equipment.
RCA used a LOT of PCBs that could go intermittent from tube heat...Prodding the boards under power could aid in troubleshooting.
The only RCA sets I know of and have seen with HV interlocks (the CTC-4 and 21CT55) would not be defeated by that rod.
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