Antique radios, Old Time Radios
2B4
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Country:
United States of America (USA)
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| Identical to |
2B4
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| Similar
Tubes |
Normally replaceable-slightly different:
885
Other base and other heater:
6Q5G
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| First Source
(s) |
02.Jan.1943 : Electron Tube Registration List rec. 315
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| Base |
UY-Base, 5 Pins (USA, April 1927)
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| Was used by |
Technology / Measurement |
| Filament |
Vf 2.5 Volts / If 1.4 Ampere / Indirect |
| Description |
Thyratron designed to operate as sawtooth generator in the timebase of oscilloscope instruments, such as the DuMont type 164 oscilloscope..
Similar to 885, registered to RCA about two years later.
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Dimensions (WHD)
incl. pins / tip |
x 102 x 38 mm / x 4.02 x 1.50 inch |
| Weight |
37 g / 1.31 oz |
| Information source |
- - Manufacturers Literature
Tube Lore (II) p. 42
Babani, International Radio Tube Encyclopaedia
Universal Vade-Mecum, Electron Valves and Semiconductor Devices
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2B4: Tabu Röhren-Codex, 1948
Anonymous 15 Collector
More ...
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Just Qvigstad
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2B4: Manufacturer's Literature
Emilio Ciardiello
More ...
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Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):1
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