Tube-number record
5B/501-B
0 archive entries
5B/501-B is a tube type in the TubeDatabase archive (class: RF Pentode). Recorded specifications: brand Standard, construction Pentode, socket 7-pin (non-miniature), maximum plate voltage 1250 V, and maximum plate dissipation 50 W. The archive does not yet hold a photographed example of this type.
BrandStandard
ClassRF Pentode
Base7-pin (non-miniature)
Filament13 V @ 1000 mA
Construction
Primary TypePentode
EnvelopeGlass
SectionsSingle
Filament / Heater
Heater NotesIndirectly heated oxide coated
Absolute Maximum Ratings
Plate Voltage1250 V
Plate Dissipation50 W
Grid 2 Voltage400 V
Audio Performance
Key Features
- Indirectly heated oxide coated
- Constant voltage type heater
- Anode connected to top cap
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Constants | 1000 V | 4500 | — | — | — |
| Class C Amplifier Unmodulated | 1200 V | — | — | — | 77 mA |
| Class C Amplifier Suppressor Modulated | 1200 V | — | — | — | 38 mA |
| Class C Telephony Grid Modulated | 1200 V | — | — | — | 45 mA |
| Class B Telephony Grid Modulated | 1200 V | — | — | — | 40 mA |
Application Notes
Standard aircraft radio use specifically for the -BF code version.
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