1F34
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BrandTESLA
ClassRemote-cutoff RF pentode
Construction
Primary Typepentode
EnvelopeGlass
Sections1
Filament / Heater
Materialoxide-coated
Absolute Maximum Ratings
Plate Voltage90 V
Plate Dissipation0.35 W
Grid 2 Voltage67.5 V
Cathode Current5.5 mA
Audio Performance
Key Features
- Directly heated cathode
- Remote-cutoff characteristic
- Battery powered operation
- RF/IF amplification
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| RF/IF amplifier 1 | 45V | 650 | 350000 | - | 1.7mA |
| RF/IF amplifier 2 | 67.5V | 750 | 250000 | - | 3.4mA |
| RF/IF amplifier 3 | 90V | 700 | 800000 | - | 1.8mA |
| RF/IF amplifier 4 | 90V | 750 | 500000 | 400 | 3.5mA |
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