Tube-number record
HK-454
0 archive entries
HK-454 is a tube type in the TubeDatabase archive (class: General Purpose Triode). Recorded specifications: brand Gammatron (Heintz and Kaufman), construction Triode, base Standard 50 Watt Base, socket 4-pin, maximum plate voltage 5000 V, and maximum plate dissipation 250 W. The archive does not yet hold a photographed example of this type.
BrandGammatron (Heintz and Kaufman)
ClassGeneral Purpose Triode
Base4-pin
Construction
Primary TypeTriode
EnvelopeNonex Glass
Base MaterialStandard 50 Watt Base
SectionsSingle
Filament / Heater
MaterialThoriated Tungsten
Absolute Maximum Ratings
Plate Voltage5000 V
Plate Dissipation250 W
Grid 1 Voltage-1000 V
Cathode Current375 mA
Audio Performance
Key Features
- Radiation cooled
- Cylindrical Tantalum plate
- Braced Vertical Bar Tantalum grid
- Copper thimble connectors
- VHF performance up to 150 mc
- 70% efficiency at 150 mc
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Radio Frequency Power Amplifier Class C Unmodulated (Low Mu) | 4000 V | — | — | 13.5 | 280 mA |
| Radio Frequency Power Amplifier Class C Unmodulated (High Mu) | 4000 V | — | — | 27 | 280 mA |
| Radio Frequency Power Amplifier Class C Plate Modulated (Low Mu) | 3500 V | — | — |
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