Tube-number record
7V7/1204
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BrandTung-Sol
ClassSharp Cut-off High Frequency RF Pentode
BaseLoctal
Filament6.3 V @ 150 mA
Construction
Primary TypePentode
EnvelopeShort T-9
Sections1
Filament / Heater
Heater NotesNominal rating 7.0V/0.160A; Typical operation at 6.3V/0.150A
Absolute Maximum Ratings
Plate Voltage300 V
Plate Dissipation1.2 W
Grid 2 Voltage100 V
Audio Performance
Key Features
- Sharp Cut-off
- High Frequency RF Pentode
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Pentode | 250 V | 1800 | 500000 | — | 4 mA |
Application Notes
Used for high frequency RF amplification. Coated unipotential cathode.
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