Antique radios, Old Time Radios
DH74
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Country:
Great Britain (UK)
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| Identical to |
DH74
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| Base |
Octal (Int.Octal, IO) K8A, USA 1935
Top contact with a cap.
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| Filament |
Vf 13 Volts / If 0.16 Ampere / Indirect |
| Information source |
Universal Vade-Mecum, Electron Valves and Semiconductor Devices group 296
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Just Qvigstad
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DH74: My schematic collection.
Pier Antonio Aluffi
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