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* upper beam cathode voltage: -1850 V | * upper beam cathode voltage: -1850 V | ||
* upper beam control grid (blanking) voltage: varies, about -2000 V | * upper beam control grid (blanking) voltage: varies, about -2000 V | ||
The CRT in model 556 is the [[T5560]]. | |||
==Pictures== | ==Pictures== |