Antique radios, Old Time Radios
B2_Osram
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Country:
Great Britain (UK)
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| Identical to |
B2_Osram
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| Base |
Europe 4-Pin B4 (Eu A, E, 4A) 1914
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| Was used by |
Military and/or Government |
| Filament |
Vf 6 Volts / If 1.4 Ampere / Direct |
| Description |
First made April 1917. 50 watt transmitting tube, with 400 - 500 anode volts. Designed by the Osram Lamp Works in conjunction with The British Government Signals Establishment, Woolwich.
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Dimensions (WHD)
incl. pins / tip |
55 x 115 x mm / 2.17 x 4.53 x inch |
| Information source |
British Radio Valves - The Vintage Years: 1904-1925 Page 70
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