Antique radios, Old Time Radios
VT4_GPO
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Country:
Great Britain (UK)
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| Identical to |
VT4_GPO
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| Similar
Tubes |
Other base:
8RR4
; R_Osram
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| Base |
SPECIAL TUBEBASE in general
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| Was used by |
Telephony |
| Filament |
Vf 4 Volts / If 0.65 Ampere / Direct / Battery = |
| Description |
Special purpose tube designed for the British Post Office. Tube fitted with PO2 special 4 contact base.
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| Information source |
British Radio Valves - The Vintage Years: 1904-1925 Pages 82 and133
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