Antique radios, Old Time Radios
CV1687
Base |
Europe 3-Pin B3 (Eu H)
Top contact with a cap.
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Was used by |
Military and/or Government |
Filament |
Vf 4 Volts / If 0.18 Ampere / Indirect / Specified voltage AND current AC/DC |
Description |
Tube used as a detector, rectifier and output. No grid pin
The CV1686 and CV1687 are selected versions of the D418. They differ in anode impedance, the CV1686 has an impedance range of 2250 to 3000 ohms; the CV1687 a range of 3000 to 3750 ohms.
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Information source |
Babani, International Radio Tube Encyclopaedia Pages 78 & 79
Universal Vade-Mecum, Electron Valves and Semiconductor Devices Page 36
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CV1687: Fin Stewart
Fin Stewart
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Just Qvigstad
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