Power - Triode (over 1000V 100W) ·Triode
Western Electric directly heated water-cooled transmitting triode for very-high-power RF service. Approximately 25 kW plate dissipation and 20 kV plate capability make it suitable for major communications and broadcast transmitter installations.
The Western Electric 342A is a directly heated water-cooled transmitting triode rated for very high plate voltage and RF power service.
Giant 5-contact 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
Promoted fields populated from explicitly published ratings/characteristics; service-specific data retained as parameters.
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/filament voltage
20 V
Heater/filament current
67 A
Maximum plate/anode voltage
20000 V
Maximum plate/anode dissipation
25000 W
Data set 02
Published operating points and test conditions from this source.
Maximum Frequency
4 MHz
Typical Maximum Power Output
8500 W
ClassB; RF
Typical Plate Voltage
15000 V
Typical Plate Current
1.3 A
Data set 03
Published operating points and test conditions from this source.
mum ratings of [1]
20 kV
mum ratings of 20 kVdc and 2.5 amperes apply at fre- by a straight-line, high-voltage process assuring the same
mum ratings of [2]
2.5 kV
mum ratings of 20 kVdc and 2.5 amperes apply at fre- by a straight-line, high-voltage process assuring the same
plate voltage reduced to
10 kV
plate voltage reduced to 10 kVdc, super-voltage x-ray tubes.
Filament Current @t [1]
20 A
Filament Current @t 20 VOIS ....ovviiiiiiiii ettt ettt e 67 amperes
Filament Current @t [2]
67 A
Filament Current @t 20 VOIS ....ovviiiiiiiii ettt ettt e 67 amperes
Maximum Outgoing Water Temperature ... ... e
75 mA
Maximum Outgoing Water Temperature ... ... e 75 °C
Direct Plate Voltage
20000 V
Direct Plate Voltage 20,000 volts
Direct Plate Current
2.5 A
Direct Plate Current 2.5 amperes
Plate Dissipation
25000
Plate Dissipation 25,000 waltts
Grid Dissipation
400
Grid Dissipation 400 watlts
R-F Grid Current
40 A
R-F Grid Current 40 amperes
Direct Plate Voltage [1]
15000 V
Direct Plate Voltage ........................... 15,000 12,500 volts
Direct Plate Voltage [2]
12500 V
Direct Plate Voltage ........................... 15,000 12,500 volts
Plate Dissipation (per tube) [1]
9000 W
Plate Dissipation (per tube) ........................... 9,000 7,200 watts
Plate Dissipation (per tube) [2]
7200 W
Plate Dissipation (per tube) ........................... 9,000 7,200 watts
Load Resistance (plate-to-plate) [1]
9600 ohm
Load Resistance (plate-to-plate) ........................... 9,600 7,680 ohms
Load Resistance (plate-to-plate) [2]
7680 ohm
Load Resistance (plate-to-plate) ........................... 9,600 7,680 ohms
Load Resistance (per tube) [1]
2400 ohm
Load Resistance (per tube) ........................... 2,400 1,920 ohms
Load Resistance (per tube) [2]
1920 ohm
Load Resistance (per tube) ........................... 2,400 1,920 ohms
Approximate Maximum OQOutput—? [1]
2 mA
Approximate Maximum OQOutput—?2 .......................... 30,000 24,000 watts
Approximate Maximum OQOutput—? [2]
30000 mA
Approximate Maximum OQOutput—?2 .......................... 30,000 24,000 watts
Approximate Maximum OQOutput—? [3]
24000 mA
Approximate Maximum OQOutput—?2 .......................... 30,000 24,000 watts
Recommended Power for Driving Stage [1]
1000 W
Recommended Power for Driving Stage ........................... 1,000 1,000 watts
Recommended Power for Driving Stage [2]
1000 W
Recommended Power for Driving Stage ........................... 1,000 1,000 watts
Direct Plate Voltage [1]
18000 V
Direct Plate Voltage ........................... 18,000 12,500 volts
Direct Plate Voltage [2]
12500 V
Direct Plate Voltage ........................... 18,000 12,500 volts
Direct Plate Current for Carrier Conditions [1]
1.4 A
Direct Plate Current for Carrier Conditions ........................... 1.4 1.4 amperes
Direct Plate Current for Carrier Conditions [2]
1.4 A
Direct Plate Current for Carrier Conditions ........................... 1.4 1.4 amperes
Dircct Plate Voltage [1]
18000 V
Dircct Plate Voltage 18,000 15,000 volts
Dircct Plate Voltage [2]
15000 V
Dircct Plate Voltage 18,000 15,000 volts
Direct Plate Current [1]
2.5 A
Direct Plate Current 2.5 2.5 amperes
Direct Plate Current [2]
2.5 A
Direct Plate Current 2.5 2.5 amperes
Nominal Power Output [1]
30000 W
Nominal Power Output 30,000 25,000 watts
Nominal Power Output [2]
25000 W
Nominal Power Output 30,000 25,000 watts
Dircct Plate Voltage [1]
12500 V
Dircct Plate Voltage ... 12,500 10,000 volts
Dircct Plate Voltage [2]
10000 V
Dircct Plate Voltage ... 12,500 10,000 volts
Direct Plate Current [1]
1.2 A
Direct Plate Current 1.2 1.5 amperes
Direct Plate Current [2]
1.5 A
Direct Plate Current 1.2 1.5 amperes
Direct Grid Current [1]
250
Direct Grid Current ........................... 250 250 milliampercs
Direct Grid Current [2]
250
Direct Grid Current ........................... 250 250 milliampercs
Nominal Carrier Power Output [1]
10000 W
Nominal Carrier Power Output 10,000 10,000 watts
Nominal Carrier Power Output [2]
10000 W
Nominal Carrier Power Output 10,000 10,000 watts
Maximum ratings apply at frequencies of [1]
4 mA
Maximum ratings apply at frequencies of 4 megacycles and voltage for frequencies between 4 and 16 megacycles should
Maximum ratings apply at frequencies of [2]
4 mA
Maximum ratings apply at frequencies of 4 megacycles and voltage for frequencies between 4 and 16 megacycles should
Maximum ratings apply at frequencies of [3]
16 mA
Maximum ratings apply at frequencies of 4 megacycles and voltage for frequencies between 4 and 16 megacycles should