GK-9B
High-power generator triode
Description
Purpose and application
GK-9B is a high-power generator triode for generating and amplifying RF oscillations in stationary radio equipment. Published operating data specify useful RF output of at least 30 kW at a reference frequency of 2 MHz.
Full descriptionCollapse description
Construction
The metal-glass tube has a directly heated thoriated, carburised tungsten cathode and a large finned external anode. Heater voltage is 7.9–8.7 V; operating current is 120–150 A and starting current may reach 250 A.
Operating data
The tube measures no more than 338 mm in height and 218 mm in diameter; mass is no more than 12 kg. It operates vertically with the anode down. The exact socket, electrode connections and supply mode must match the equipment documentation.
Cooling and selection
Forced-air cooling is mandatory: airflow for the anode must be at least 1300 m³/h and for the stem at least 30 m³/h. Inspect the radiator fins, glass-metal seals and terminal plate before installation.
The operating principle is covered in the vacuum tube article. Related devices are listed under generator and modulator tubes.
Technical details
- Designation
- GK-9B
- Device type
- High-power generator triode
- Purpose
- RF generation and power amplification
- Construction
- Metal-glass with finned external anode
- Cathode
- Directly heated thoriated carburised tungsten
All specificationsCollapse specifications
- Heater voltage
- 7.9–8.7 V
- Operating heater current
- 120–150 A
- Maximum starting heater current
- 250 A
- Minimum RF output
- 30 kW
- Reference frequency
- 2 MHz
- Anode airflow
- 1300 m³/h
- Stem airflow
- 30 m³/h
- Operating position
- Vertical, anode down
- Maximum dimensions
- 338 × 218 mm
- Maximum mass
- 12 kg
Payment & delivery
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Payment & delivery terms