DuMont 5ADP1 oscilloscope CRT · boxed
Five-inch electrostatic-deflection CRT from the company that literally invented the American scope.
- SKU
- MS-VT-0425
- Era
- 1900-1950
- Condition
- NOS, original DuMont box with foam bolster; screen unblemished
- Dimensions
- 295 × 130 mm (L × face Ø)
- Weight
- 780 g
- Provenance
- Acquired 2020 from the estate of a Bell Labs test engineer, Murray Hill, NJ.
- Category
- Vacuum Tubes & Valves
- Tags
- dumont5adp1crtoscilloscopeelectrostatic
A five-inch round-face CRT from Allen B. DuMont Laboratories of Passaic, New Jersey — the outfit whose founder built the first commercially practical American oscilloscope in the 1930s and who supplied the CRTs for most of the wartime radar training equipment that followed. The P1 phosphor is the classic medium-persistence green, ideal for general-purpose waveform work.
The envelope is the tall electrostatic-deflection type with the twelve-pin duodecal base and the deflection plate leads brought out to the top pip. The screen shows no burn, no cataract, and no gassing. It has, in short, done nothing at all since it was packed.
A display piece as much as a service part. We include a printed copy of the original DuMont data sheet.
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