Power - Triode ·Triode
Western Electric thoriated-tungsten transmitting triode for Class-B RF service, with approximately 12.5 W catalog RF output.
Western Electric transmitting triode with a thoriated-tungsten filament, rated for B-RF service and a catalog power output of 12.5 W.
Medium 4-contact bayonet base
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
Absolute maximum ratings and average static characteristics promoted from the exact transmitting-tube row.
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.
Filament Voltage
5 V
Filament Current
3.25 A
Maximum Plate Voltage
750 V
Maximum Plate Current
60 mA
Maximum Plate Dissipation
25 W
Maximum Frequency
30 MHz
Plate Voltage
750 V
B-RF
Plate Current
25 mA
B-RF
Power Output
12.5 W
B-RF
Amplification Factor
5
B-RF
Transconductance
800 µS
B-RF
Data set 02
Published operating points and test conditions from this source.
Plate To Grid Capacitance
2.3 pF
Grid To Filament Capacitance
5.4 pF
Plate To Filament Capacitance
1.1 pF
MaximumDirectGridCurrent
10 mA
MaximumFrequencyAtFullRatings
30 MHz