Tube-number record
8149
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BrandTung-Sol
ClassBeam Power VHF Pentode
BaseCompactron
Filament13 V @ 0.6 mA
Construction
Primary TypePentode
EnvelopeT-12
Base MaterialGlass
Sections1
Filament / Heater
Heater NotesCenter-tapped heater for 3-cell or 6-cell storage battery systems.
Absolute Maximum Ratings
Plate Voltage750 V
Plate Dissipation35 W
Grid 2 Voltage250 V
Grid 1 Voltage-150 V
Cathode Current220 mA
H-C Voltage135 V
Audio Performance
Power Output40 W
Key Features
- Compactron design
- Single-ended
- Center-tapped heater
- High frequency operation up to 175 Mc/s
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Average Static Characteristics | 200 V | 7500 | — | 45 | 100 mA |
| Class C Amplifier at 175 Mc/s | 380 V | — | — | — | 180 mA |
Application Notes
Intended for use as an RF power amplifier and oscillator in mobile or industrial equipment. ICAS ratings allow for intermittent commercial and amateur service.
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