Tube-number record
6907
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BrandTung-Sol
ClassR-F Beam Power Tube
Base7-pin (non-miniature)
Filament6.3 V @ 1.3 mA
Construction
Primary TypeTetrode
EnvelopeGlass
Base MaterialGlass
Sections2
Filament / Heater
Heater NotesRated for both 6.3V parallel and 12.6V series operation.
Absolute Maximum Ratings
Plate Voltage600 V
Plate Dissipation20 W
Grid 2 Voltage250 V
H-C Voltage100 V
Audio Performance
Typical THD3.5%
Power Output23.5 W
Key Features
- Compact UHF twin tetrode
- Power sensitive
- Linear characteristic
- Linear push-pull operation up to 600 Mc
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| R-F Power Amplifier Class C Telegraphy (CCS) | 400 V | 2500 | — | 8 | 100 mA |
| Frequency Tripler Class C Telegraphy (CCS) | 350 V | — | — | — | 90 mA |
| Plate & Screen Modulated R-F Power Amplifier Class C (CCS) | 300 V | — | — | — |
Application Notes
Plate connectors should provide high heat transfer. Natural cooling is sufficient up to 150 MHz at 600V, but airflow of 0.5 CFM may be required at higher frequencies/temperatures.
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