7551
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BrandSYLVANIA
ClassReceiving Tube
Base9-Pin Miniature
Filament12V @ 360mA
Construction
Primary TypeBeam Pentode
EnvelopeT6 1/2
SectionsSingle
Filament / Heater
Heater NotesCurrent measured at 13.5 Volts
Absolute Maximum Ratings
Plate Voltage300 V
Plate Dissipation10 W
Grid 2 Voltage250 V
Grid 1 Voltage-125 V
H-C Voltage100 V
Audio Performance
Typical THD5%
Power Output20.5 W
Key Features
- Mobile equipment design
- Up to 175 Mc frequency range
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Characteristics | 250V | 5300 | - | 8.7 | 40mA |
| Class C Telegraphy CCS | 300V | - | - | - | 70mA |
| Class AB1 AF Amplifier (Push-Pull) | 300V | - | - | - | 125mA |
Application Notes
Designed for use as a Class C RF amplifier, oscillator, or frequency multiplier up to 175 Mc. Can also be used as a modulator or AF amplifier.
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