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5UP1 Cathode-Ray Tube

Mens T-Shirt Price: $19.99

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The 5UP1 is a 5" electrostatic CRT; 1KV anode voltage, 2.5KV accelerator, with a green medium persistence phosphor. These tubes were popular in many oscilloscope models including the 1958 Heathkit O-11 5 Extra Duty Oscilloscope.

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