Antique radios, Old Time Radios
1633
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Country:
United States of America (USA)
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| Identical to |
1633
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| Similar
Tubes |
Other class quality (otherwise equal):
25SN7GT
Heater different:
6SN7GT
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| First Source
(s) |
1941 : Tube Lore (I)
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| Production stop |
1955 |
| Base |
Octal (Int.Octal, IO) K8A, USA 1935 (Codex=Vk)
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| Filament |
Vf 25 Volts / If 0.15 Ampere / Indirect |
| Tube prices |
1 Tube prices (visible for members
only)
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| Information source |
Essential Characteristics, GE 1973
Taschenbuch zum Röhren-Codex 1948/49
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1633: Telefunken Werkstattbuch
Wolfgang Bauer
More ...
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Just Qvigstad
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1633: Babani 1951-1954
Patrice Zeissloff
More ...
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