Antique radios, Old Time Radios
Pyramid-1
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Country:
Great Britain (UK)
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| Identical to |
Pyramid-1
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| Similar
Tubes |
Heater different:
Pyramid-2
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| First year |
Sep.1925
Wireless World (The), London (WW, 79) Company Advertisement
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| First Source
(s) |
1924 : British Radio Valves - The Vintage Years: 1904-1925 p. 60 & 120
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| Base |
Europe 4-Pin B4 (Eu A, E, 4A) 1914
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| Was used by |
Radio/TV-reception etc. |
| Filament |
Vf 5.5 Volts / If 0.34 Ampere / Direct / Battery = |
| Information source |
-- Collector info (Sammler) Banneitz, TB der drahtl. Telephonie u.Telegr. 1927
Wireless World (The), London (WW, 79) September 1925
- - Manufacturers Literature
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Pyramid-1: Fin Stewart
Fin Stewart
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Just Qvigstad
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Pyramid-1: Banneitz, TB der drahtl. Teleph. 1927
Anonymous 15 Collector
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