6861
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BrandEnglish Electric Valve Company Limited
ClassTravelling Wave Tube
BaseInternational Octal
Filament5V @ 0.5mA
Construction
Primary TypeLow Noise Travelling Wave Tube
EnvelopeMetal Canister
SectionsSingle
Filament / Heater
Heater NotesIndirectly heated, oxide coated; Starting current 4.0A max; Warm-up time 10 min
Absolute Maximum Ratings
Plate Voltage600 V
Grid 2 Voltage75 V
Grid 1 Voltage20 V
Cathode Current0.5 mA
Audio Performance
Key Features
- Low noise
- Coaxial input and output connectors (Type N)
- Contained in metal canister
- Separate focusing solenoid required (N4004)
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| 3.1 GHz RF Amplifier | 400V | - | - | - | 0.15mA |
Application Notes
Recommended for input stage of radar and microwave receivers and IF amplifier service. Collector is maintained positive with respect to helix.
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