Antique radios, Old Time Radios
VR21
Base |
Europe 4-Pin B4 (Eu A, E, 4A) 1914 (Codex=Eo)
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Was used by |
Military and/or Government |
Filament |
Vf 2 Volts / If 0.1 Ampere / Direct / Battery = |
Description |
This is the earlier name for the CV1021. and is also known as 10E/7738. Va<150. Typ Gm= 1.4mA/V at Ia=4.5mA, Va=125, -Vg=3.
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Information source |
Babani, International Radio Tube Encyclopaedia p. 156 &157
-- Original-techn. papers.
Universal Vade-Mecum, Electron Valves and Semiconductor Devices
Taschenbuch zum Röhren-Codex 1948/49
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VR21: Datenblatt
Wolfgang Bauer
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Just Qvigstad
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Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):3
Collection of
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