Tube-number record
X-392
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BrandITT
ClassBackward-Wave Converter Tube
BaseFlexible / flying leads
Filament6.3 V @ 3.5 mA
Construction
Primary TypeOther / special
EnvelopeGlass in aluminum capsule
Base MaterialAluminum
SectionsDual (Amplifier and Oscillator)
Filament / Heater
Heater NotesDC preferred
Absolute Maximum Ratings
Plate Voltage250 V
Grid 2 Voltage900 V
Grid 1 Voltage-10 V
Cathode Current8 mA
Audio Performance
Key Features
- Single tube signal converter
- Integrated backward-wave amplifier
- Solenoid focusing required
- Coaxial input/output connectors
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Converter (2200 MHz) | 200 V | — | — | — | 3.6 mA |
Application Notes
The X-392 is designed to convert UHF signals to a 130 megacycle intermediate frequency output signal using a backward-wave interaction in a common electron beam.
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