Antique radios, Old Time Radios
B7_BTH
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Country:
Great Britain (UK)
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| Identical to |
B7_BTH
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| First Source
(s) |
1924 : Saga of the Vacuum Tube, Tyne
1924 : British Radio Valves - The Vintage Years: 1904-1925 p.47
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| Base |
Europe 4-Pin B4 (Eu A, E, 4A) 1914
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| Filament |
Vf 6 Volts / If 0.06 Ampere / Direct / Battery = |
| Description |
Va <120. "Made at the Mazda Lamp Works. For Use with Dry Cells". BTH Advertisement
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| Information source |
- - Manufacturers Literature 1925 Brown Brothers Catalog 217
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B7_BTH: Fin Stewart
Fin Stewart
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Just Qvigstad
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B7_BTH: Wireless World No. 303. WEDNESDAY, JUNE 3RD, 1925. VOL. XVI. No. 17 p.549
Thomas Günzel † 1.8.22
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