Tube-number record
MICROWAVE TRIODE
0 archive entries
MICROWAVE TRIODE is a tube type in the TubeDatabase archive (class: Transmitting Tube). Recorded specifications: brand VEB Werk für Fernsehelektronik Berlin, construction Triode, base Metal, socket Coaxial, maximum plate voltage 600 V, and maximum plate dissipation 25 W. The archive does not yet hold a photographed example of this type.
BrandVEB Werk für Fernsehelektronik Berlin
ClassTransmitting Tube
BaseCoaxial
Filament6 V @ 0.9 mA
Construction
Primary TypeTriode
EnvelopeMetal-Ceramic
Base MaterialMetal
SectionsSingle
Filament / Heater
MaterialMetal-Capillary Cathode
Warm-up Time2s
Heater NotesIndirectly heated; reduce heater voltage if cathode current is less than 70mA for longevity.
Absolute Maximum Ratings
Plate Voltage600 V
Plate Dissipation25 W
Grid 1 Voltage-50 V
Cathode Current72 mA
Audio Performance
Key Features
- Metal-ceramic technology
- Concentric electrode connections
- High frequency operation up to 7 GHz
- Indirectly heated capillary cathode
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Static Operation | 400 V | 17000 | — | 60 | 60 mA |
| Oscillator (6 GHz) | 400 V | 7000 | — | — | 60 mA |
Application Notes
HT 711 is without cooling body. Additional cooling (100 l/min air flow) is required at maximum plate dissipation.
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