Antique radios, Old Time Radios
VT7_GPO
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Country:
Great Britain (UK)
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| Identical to |
VT7_GPO
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| Base |
SPECIAL TUBEBASE in general
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| Was used by |
Telephony |
| Filament |
Direct / Specified voltage AND current AC/DC |
| Description |
Tube designed for British Post Office and first made 1920. Used in radio applications. Fitted with british Post Office PO2 base and production limited to 200 tubes.
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| Information source |
British Radio Valves - The Vintage Years: 1904-1925 Pages 82 and 133
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