TRIPLE DIODE TRIODE
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BrandTUNG-SOL
ClassAM/FM Receiver Tube
Base8 Pin Octal
Filament6.3V @ 300mA
Construction
Primary TypeGlass
EnvelopeJEDEC 9-23 OR 9-48
Base MaterialIntermediate Shell 8 Pin Octal B8-6 or Short Intermediate Shell B8-58
SectionsHigh-mu triode and three separate diodes
Filament / Heater
Heater NotesLimits of applied voltage: 6.3 +/- 0.6 Volts
Absolute Maximum Ratings
Plate Voltage300 V
Plate Dissipation0.5 W
Cathode Current1 mA
H-C Voltage90 V
Audio Performance
Key Features
- Triple Diode Triode
- Coated Unipotential Cathode
- Separate cathode for one diode
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A1 Amplifier | 100V | 900 | 110000 | 100 | 0.4mA |
| Class A1 Amplifier | 250V | 1100 | 91000 | 100 | 0.9mA |
Application Notes
The 6S8GT combines a high-mu triode and three separate diodes in one envelope. One diode has a separate cathode permitting use as a balanced discriminator. Ideal for AM/FM receivers to detect both types of signal without additional switching.
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