Antique radios, Old Time Radios
VT23_GPO
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Country:
Great Britain (UK)
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| Identical to |
VT23_GPO
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| Base |
Europe 4-Pin B4 (Eu A, E, 4A) 1914
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| Was used by |
Telephony |
| Filament |
Direct |
| Description |
Small triode tube used by the British Post Office as a repeater tube in telephony. First made 1922 - only 134 tubes manufactured.
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| Information source |
British Radio Valves - The Vintage Years: 1904-1925 Pages 83 and 133
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VT23_GPO: Fin Stewart
Fin Stewart
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Just Qvigstad
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