Antique radios, Old Time Radios
CV657
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| Tube type: |
Vacuum Pentode Audio Frequency |
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| Identical to |
CV657
= 1620_Pentode
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| Similar
Tubes |
Normally replaceable-slightly different:
6J7
; VT-91
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| Base |
Octal (Int.Octal, IO) K8A, USA 1935 (Codex=Uf)
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| Was used by |
Military and/or Government |
| Filament |
Vf 6.3 Volts / If 0.3 Ampere / Indirect / Specified voltage AND current AC/DC |
| Information source |
Taschenbuch zum Röhren-Codex 1948/49
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CV657: Manufacturer's Literature
Emilio Ciardiello
More ...
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Just Qvigstad
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