Tube-number record
4T22
0 archive entries
4T22 is a tube type in the TubeDatabase archive (class: Industrial Transmitting Tube). Recorded specifications: brand Hitachi, construction Triode, maximum plate voltage 3000 V, and maximum plate dissipation 150 W. The archive does not yet hold a photographed example of this type.
BrandHitachi
ClassIndustrial Transmitting Tube
Construction
Primary TypeTriode
EnvelopeGlass
SectionsSingle
Filament / Heater
MaterialThoriated Tungsten
Absolute Maximum Ratings
Plate Voltage3000 V
Plate Dissipation150 W
Audio Performance
Power Output708 W
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class B Audio (2 tubes) | 2500 V | — | — | — | 360 mA |
| Class C Telegraphy | 2500 V | — | — | — | 209 mA |
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