Antique radios, Old Time Radios
2B20_GM-Tube
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Country:
Great Britain (UK)
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| Identical to |
2B20_GM-Tube
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| Similar
Tubes |
Normally replaceable-slightly different:
2B7_GM-Tube
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Successor Tubes
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2B7_GM-Tube
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| Was used by |
Technology / Measurement |
| Filament |
--/-- |
| Description |
Organically (Ethyl Formate)quenched detector primarily for Beta radiation detection but also suitable for Gamma and X-rays.
0.065mm alloy window
Operating Voltage 1400-1600. Typically 1500V
Useful life >5x108 Counts.
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Dimensions (WHD)
incl. pins / tip |
62 x 76 x mm / 2.44 x 2.99 x inch |
| Information source |
- - Manufacturers Literature GEC data 1952
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| Data Compliance |
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