Tube-number record
T.R. CELL
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T.R. CELL is a tube type in the TubeDatabase archive (class: Microwave Gas Tube). Recorded specifications: brand Ferranti, year 1960, construction Other / special, socket Waveguide, and maximum plate voltage 200000 V. The archive does not yet hold a photographed example of this type.
BrandFerranti
ClassMicrowave Gas Tube
BaseWaveguide
Construction
Primary TypeOther / special
EnvelopeMetal/Waveguide
SectionsTwo keep-alive electrodes
Filament / Heater
Absolute Maximum Ratings
Plate Voltage200000 V
Grid 2 Voltage650 V
Grid 1 Voltage-1500 V
Cathode Current10 mA
Audio Performance
Key Features
- Broad band
- Two keep-alive electrodes
- Suitable for pre-pulsing
- Can be used in branched or balanced duplexer systems
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| D.C. Primer Operation | 230 V | — | — | — | 0.1425 mA |
Application Notes
For operation at a line power above 50 kW, a pre-TR cell is recommended. A balanced mixer should be used wherever possible. The leading edge of the pre-pulse must precede the main R.F. pulse by 0.2 microseconds.
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