Tube-number record
4307-A
0 archive entries
4307-A is a tube type in the TubeDatabase archive (class: Pentode). Recorded specifications: brand Standard Valves, construction Pentode, socket 5-pin, maximum plate voltage 500 V, and maximum plate dissipation 15 W. The archive does not yet hold a photographed example of this type.
BrandStandard Valves
ClassPentode
Base5-pin
Construction
Primary TypePentode
EnvelopeGlass
SectionsSingle
Filament / Heater
MaterialOxide coated
Absolute Maximum Ratings
Plate Voltage500 V
Plate Dissipation15 W
Grid 2 Voltage300 V
Grid 1 Voltage30 V
Cathode Current85 mA
Audio Performance
Power Output9.1 W
Key Features
- Oxide coated filament
- Top cap anode connection
- Aircraft radio tested variant (-AF)
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A Amplifier | 200 V | — | — | — | 36.5 mA |
| Class A Amplifier | 250 V | — | — | — | 50 mA |
| Class A Amplifier | 300 V | — | — | — | 43 mA |
| Class C Suppressor Modulated | 500 V | — | 4000 | — | 40 mA |
Application Notes
The 4307-AF variant has passed special tests for use in Standard Aircraft Radio.
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