Antique radios, Old Time Radios
VT81
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Country:
Great Britain (UK)
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| Identical to |
VT81
= CV1081
= 10E/3
= 4052A
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| Similar
Tubes |
Different maximum ratings:
RK20A
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| Base |
UY-Base, 5 Pins (USA, April 1927) (Codex=Hr)
Top contact with a cap.
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| Filament |
Vf 7.5 Volts / If 3 Ampere / Direct |
| Description |
60W max plate dissipation, 60MHz max operating frequency. G3 to a separate pin for suppressor grid modulation.
Similar to RK20A with increased power capability.
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Dimensions (WHD)
incl. pins / tip |
x 229 x mm / x 9.02 x inch |
| Information source |
Taschenbuch zum Röhren-Codex 1948/49
-- Original-techn. papers.
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VT81: Manufacturer's Literature
Emilio Ciardiello
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Just Qvigstad
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