Antique radios, Old Time Radios
AT40
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Country:
Great Britain (UK)
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Brand:
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| Tube type: |
Transmitting Triode, air cooled Power/Output |
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<1925 very rare. *** |
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| Identical to |
AT40
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| Similar
Tubes |
Other base and data slightly different:
AT40_UV
; VT15_GPO
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| First year |
1922
Saga of the Vacuum Tube, Tyne Seite 381
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| First Source
(s) |
1921 : British Radio Valves - The Vintage Years: 1904-1925 p.77
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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 7 Volts / If 1.5 Ampere / Direct |
| Description |
Made for the British Army by MOV. Also made by A.C.Cossor Ltd - tube in collection has American UV 4 pin base.
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Dimensions (WHD)
incl. pins / tip |
60 x 125 x mm / 2.36 x 4.92 x inch |
| Information source |
British Radio Valves - The Vintage Years: 1904-1925 Pages 77 & 83
- - Data from my own collection
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AT40: Fin Stewart
Fin Stewart
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Just Qvigstad
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Collection of
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