Antique radios, Old Time Radios
VT9_GPO
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| Tube type: |
Triode, vacuum Audio Frequency |
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<1925 very rare. *** |
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| Identical to |
VT9_GPO
= 209A
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| Base |
Europe 4-Pin B4 (Eu A, E, 4A) 1914
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| Was used by |
Telephony |
| Filament |
Vf 2 Volts / If 0.97 Ampere / Direct / Specified voltage AND current AC/DC |
| Description |
Tube used by British Post Office. Western Electric tube designed as type 209A. No information available if these tubes were manufactured in the UK or were re-branded American types.
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| Information source |
British Radio Valves - The Vintage Years: 1904-1925 Pages 82 and133
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VT9_GPO: Fin Stewart
Fin Stewart
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Just Qvigstad
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