X-388
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BrandITT
ClassBackward Wave Converter Tube
BaseColor coded flying leads and Coaxial (TNC/TSM)
Filament7V @ 3900mA
Construction
Primary TypeBackward Wave
EnvelopeGlass tube in aluminum capsule
SectionsBackward-wave amplifier and backward-wave oscillator
Filament / Heater
Heater NotesMaximum heater voltage 7.5V; Typical current 3.9A
Absolute Maximum Ratings
Plate Voltage250 V
Cathode Current8 mA
Audio Performance
Key Features
- Backward-wave amplifier and oscillator in the same vacuum envelope
- Solenoid focusing
- UHF signal conversion
- Integral RF and IF connectors
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Converter @ 750 MHz | 200V | - | - | - | 2.6mA |
Application Notes
The tube converts UHF signals in the band from 496-897 megacycles to a 50 megacycle intermediate frequency output signal.
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