Power - Triode (over 1000V 100W) ·Triode
Very-high-power water-cooled Tesla transmitting triode with thoriated-tungsten filament for lower-frequency RF power service. Approximately 150 kW plate dissipation and 20 kV capability suit enormous fixed installations.
Water-cooled thoriated-tungsten transmitting triode with 150 kW anode dissipation for high-frequency power amplification up to about 3 MHz.
General specifications
Properties common to every published source and operating point.
Electrical assignments shared by every tube using this base designation.
No verified pinout is recorded for this base designation.
1 physical section, each with unique specifications.
Section 1
Maximum anode voltage also has lower condition-specific limits for modulated/higher-frequency service; preserved in parameters/notes.
Source-dependent data
Each block preserves the test conditions and published values from one reference. Values from different sources are intentionally kept separate.
Data set 01
Published operating points and test conditions from this source.
Heater Voltage
18.22 to 18.77 V
Published range
Heater Current
335 A to 365 A
Published range
Maximum Plate Voltage
20000 V
Highest published maximum rating
Maximum Plate Dissipation
150000 W
Maximum Frequency
3 MHz
Data set 02
Published operating points and test conditions from this source.
Heater voltage
18.5 V
Heater current
335 A to 365 A
Maximum anode current
20 A
Maximum grid current
4.5 A
Maximum frequency
3 MHz
Cooling-water flow
150 L/min
1.5 kg/cm2 pressure
Forced-air flow
5 m3/min
120 mm water-column pressure
Minimum heater voltage
18.22 V
Maximum heater voltage
18.77 V
Grid-cathode capacitance
101 pF
Anode-cathode capacitance
6 pF
Anode-grid capacitance
51 pF
Amplification factor
40 to 48
Plate resistance
1800 to 2500 ohm
Emission current
130 A