Tube-number record
TPO 921
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BrandCompagnie Générale de T.S.F. (CSF)
ClassTraveling Wave Tube
BaseOctal
Filament6.3 V @ 1.4 mA
Construction
Primary TypeOther / special
EnvelopeGlass/Metal
Sections1
Filament / Heater
Warm-up Time90s
Heater NotesCathode à oxydes à chauffage indirect
Absolute Maximum Ratings
Plate Voltage1100 V
Grid 2 Voltage700 V
Cathode Current35 mA
Audio Performance
Power Output2 W
Key Features
- Permanent magnet focusing
- No forced air cooling required
- Interchangeable in focusers
- Standard waveguide No. 6 connection
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| RF Amplifier 3.8-4.2 GHz | 1000 V | — | — | — | 24 mA |
Application Notes
Broadband electronic tuning amplifier for the 3.8 to 4.2 GHz range. Designed for use in microwave relay links. Requires a safety relay for the helix (Ih < 5 mA).
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