Antique radios, Old Time Radios
1861
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Country:
Netherlands
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| Identical to |
1861
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| Similar
Tubes |
Other base and other heater:
AZ4
|
| First year |
1933
Tube leaflet collection E.Erb Analysis by original leaflets
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| First Source
(s) |
22.Nov.1935 : Wireless World (The), London (WW, 79)
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Successor Tubes
|
1938
AZ4
|
| Base |
Europe 4-Pin B4 (Eu A, E, 4A) 1914 (Codex=Em)
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| Was used by |
Radio/TV-reception etc. |
| Filament |
Vf 4 Volts / If 2.4 Ampere / Half indirect |
| Information source |
- - Manufacturers Literature
Babani, International Radio Tube Encyclopaedia p. 258 & 259
Universal Vade-Mecum, Electron Valves and Semiconductor Devices
Taschenbuch zum Röhren-Codex 1948/49
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1861: rtt
Anonymous 10 Collector
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Just Qvigstad
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Collection of
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