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892R

High-power transmitting triode for RF amplification, oscillation, modulation, or related transmitter and industrial service.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: 22 V / 60 A

Description

Forced-air-cooled high-power transmitting-triode version of the 892 family.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: -
Base pins: -
Nominal heater voltage: 22 V
Nominal heater current: 60 A
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

Terminal pinout

Electrical assignments shared by every tube using this base designation.

No verified pinout is recorded for this base designation.

Section ratings

1 physical section, each with unique specifications.

Section 1

Triode

X-ray radiationInterelectrode capacitances

Transconductance: 0.007 S
Amplification factor: 50
Max plate voltage: 12500 V
Max plate dissipation: 4000 W
Max cathode current: 3.3 A

Promoted ratings/characteristics mapped from printed headings; device/service-specific values retained in parameters.

Source-dependent data

Operating conditions by source

Each block preserves the test conditions and published values from one reference. Values from different sources are intentionally kept separate.

Data set 01

1950 General Electric Transmitting Types

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristic

Amplification Factor
50

Other

Maximum Plate Voltage
15000 V
Maximum Plate Dissipation
10000 W
Maximum Cathode Current
3.3 A

Data set 02

1953 Amperex

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

Heater/Filament Voltage
22 V
Published datasheet value
Heater/Filament Current
120 A
Published datasheet value
Maximum Plate/Anode Voltage
12500 V
Published datasheet value
Maximum Plate/Anode Dissipation
8000 W
Published datasheet value

Characteristic

Transconductance
7000 µS
Published datasheet value
Amplification Factor
50
Published datasheet value

Data set 03

1958 Amperex Industrial

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

Plate voltage
10000 V
RFPowerAmplifier;ClassC
Plate current
1.4 A
RFPowerAmplifier;ClassC
Power output
10500 W
RFPowerAmplifier;ClassC
Control-grid voltage
-1300 V
RFPowerAmplifier;ClassC
Grid current
160 mA
RFPowerAmplifier;ClassC
Maximum frequency at full input
1.6 MHz
RFPowerAmplifier

Capacitance

Grid-to-plate capacitance
32 pF
Section1
Grid-to-filament capacitance
17 pF
Section1
Plate-to-filament capacitance
2 pF
Section1

Data set 04

1963 Amperex Condensed

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

Plate voltage
10000 V
RFPowerAmplifier
Plate current
1.4 A
RFPowerAmplifier
Power output
10500 W
RFPowerAmplifier
Control-grid voltage
-1300 V
RFPowerAmplifier
Grid current
160 mA
RFPowerAmplifier
Maximum frequency at full input
1.6 MHz
RFPowerAmplifier

Capacitance

Grid-to-plate capacitance
32 pF
Section1
Grid-to-filament capacitance
17 pF
Section1
Plate-to-filament capacitance
2 pF
Section1

Data set 05

1971 Machlette Laboratories

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

designed specifically for use as modulators, amplifiers, or voltage and [1]
30 kW
designed specifically for use as modulators, amplifiers, or voltage and 30 kW plate input for the ML-892 and 125
designed specifically for use as modulators, amplifiers, or voltage and [2]
892 kW
designed specifically for use as modulators, amplifiers, or voltage and 30 kW plate input for the ML-892 and 125
designed specifically for use as modulators, amplifiers, or voltage and [3]
125 kW
designed specifically for use as modulators, amplifiers, or voltage and 30 kW plate input for the ML-892 and 125
oscillators in radio transmitting service. The cathode of kVdc plate voltage and [1]
18 kV
oscillators in radio transmitting service. The cathode of kVdc plate voltage and 18 kW plate input for the ML-892R
oscillators in radio transmitting service. The cathode of kVdc plate voltage and [2]
892 kV
oscillators in radio transmitting service. The cathode of kVdc plate voltage and 18 kW plate input for the ML-892R
water-cooled anode capable of dissipating [1]
10 kW
water-cooled anode capable of dissipating 10 kW with a service up to 20 Mc with plate voltage and plate input re-
water-cooled anode capable of dissipating [2]
20 kW
water-cooled anode capable of dissipating 10 kW with a service up to 20 Mc with plate voltage and plate input re-
anode capable of dissipating
4 kW
anode capable of dissipating 4 kW with an air flow of
Filament Voltage
22
Filament Voltage ... ............................... 22 Vol
Filament CUrrent ..............ccocooiiiiiii i
60 A
Filament CUrrent ..............ccocooiiiiiii i ................................ 60 Amps
Filament Starting Current, maximum
120 A
Filament Starting Current, maximum .. 120 Amps
Filament Cold Resistance ...t
0.031
Filament Cold Resistance ...t ................................ 0.031 Obms
Amplification Factor
50
Amplification Factor ... ................................ 50
Interelectrode Capacitances: ML [1]
892
Interelectrode Capacitances: ML-892 ML-892R
Interelectrode Capacitances: ML [2]
892
Interelectrode Capacitances: ML-892 ML-892R
Water flow on anode [1]
3 gpm
Water flow on anode ... 3-8 gpm
Water flow on anode [2]
-8 gpm
Water flow on anode ... 3-8 gpm
Maximum outgoing water temperature
70 mA
Maximum outgoing water temperature ... 70 °C
Air flow on anode, minimum for [1]
4 kW
Air flow on anode, minimum for 4 kW dissipation 450 cfm at 0.5" Water
Air flow on anode, minimum for [2]
450 kW
Air flow on anode, minimum for 4 kW dissipation 450 cfm at 0.5" Water
Air flow on anode, minimum for [3]
0.5 kW
Air flow on anode, minimum for 4 kW dissipation 450 cfm at 0.5" Water
Maximum incoming air temperature ..................ccccooeiin
45 mA
Maximum incoming air temperature ..................ccccooeiin. 45 °C
Maximum Glass Temperature ...............coocooiiiiii,
160 mA
Maximum Glass Temperature ...............coocooiiiiii, ................................ 160 °C
D-C Plate Voltage [1]
15000
D-C Plate Voltage .................. 15000 12500 voles modulation factor of 1.0
D-C Plate Voltage [2]
12500
D-C Plate Voltage .................. 15000 12500 voles modulation factor of 1.0
D-C Plate Voltage [3]
1
D-C Plate Voltage .................. 15000 12500 voles modulation factor of 1.0
Max-Signal D-C Plate Current* [1]
2 A
Max-Signal D-C Plate Current* ... 2.0 2.0 amps Maximum Ratings, Absolute Values ML-892 ML-892R
Max-Signal D-C Plate Current* [2]
2 A
Max-Signal D-C Plate Current* ... 2.0 2.0 amps Maximum Ratings, Absolute Values ML-892 ML-892R
Max-Signal D-C Plate Current* [3]
892 A
Max-Signal D-C Plate Current* ... 2.0 2.0 amps Maximum Ratings, Absolute Values ML-892 ML-892R
Max-Signal D-C Plate Current* [4]
892 A
Max-Signal D-C Plate Current* ... 2.0 2.0 amps Maximum Ratings, Absolute Values ML-892 ML-892R
Max-Signal Plate Input® [1]
20000 V
Max-Signal Plate Input® ........... 20000 12000 wats D-C Plate Voltage 1000 1000 volts
Max-Signal Plate Input® [2]
12000 V
Max-Signal Plate Input® ........... 20000 12000 wats D-C Plate Voltage 1000 1000 volts
Max-Signal Plate Input® [3]
1000 V
Max-Signal Plate Input® ........... 20000 12000 wats D-C Plate Voltage 1000 1000 volts
Max-Signal Plate Input® [4]
1000 V
Max-Signal Plate Input® ........... 20000 12000 wats D-C Plate Voltage 1000 1000 volts
Plate Dissipation* [1]
7500 V
Plate Dissipation* ... 7500 4000 watts D-C Grid Voleage ... —3000 —3000 volts
Plate Dissipation* [2]
4000 V
Plate Dissipation* ... 7500 4000 watts D-C Grid Voleage ... —3000 —3000 volts
Plate Dissipation* [3]
-3000 V
Plate Dissipation* ... 7500 4000 watts D-C Grid Voleage ... —3000 —3000 volts
Plate Dissipation* [4]
-3000 V
Plate Dissipation* ... 7500 4000 watts D-C Grid Voleage ... —3000 —3000 volts
Typical Operation (Values are for two tubes) ML [1]
892 A
Typical Operation (Values are for two tubes) ML-892 D-C Plate Current 1.0 1.0 amps
Typical Operation (Values are for two tubes) ML [2]
1 A
Typical Operation (Values are for two tubes) ML-892 D-C Plate Current 1.0 1.0 amps
Typical Operation (Values are for two tubes) ML [3]
1 A
Typical Operation (Values are for two tubes) ML-892 D-C Plate Current 1.0 1.0 amps
D-C Plate Voltage [1]
6000 V
D-C Plate Voltage ... 6000 8000 10000 12500 volts D-C Grid Current 030 030 amp
D-C Plate Voltage [2]
8000 V
D-C Plate Voltage ... 6000 8000 10000 12500 volts D-C Grid Current 030 030 amp
D-C Plate Voltage [3]
10000 V
D-C Plate Voltage ... 6000 8000 10000 12500 volts D-C Grid Current 030 030 amp
D-C Plate Voltage [4]
12500 V
D-C Plate Voltage ... 6000 8000 10000 12500 volts D-C Grid Current 030 030 amp
D-C Plate Voltage [5]
30 V
D-C Plate Voltage ... 6000 8000 10000 12500 volts D-C Grid Current 030 030 amp
D-C Plate Voltage [6]
30 V
D-C Plate Voltage ... 6000 8000 10000 12500 volts D-C Grid Current 030 030 amp
Voltage [1]
1000 V
Voltage ... 1000 1000 1380 1370 volts Typical Operation ML-892
Voltage [2]
1000 V
Voltage ... 1000 1000 1380 1370 volts Typical Operation ML-892
Voltage [3]
1380 V
Voltage ... 1000 1000 1380 1370 volts Typical Operation ML-892
Voltage [4]
1370 V
Voltage ... 1000 1000 1380 1370 volts Typical Operation ML-892
Voltage [5]
892 V
Voltage ... 1000 1000 1380 1370 volts Typical Operation ML-892
Zero-Signal D-C Plate D-C Plate Voltage [1]
6000 V
Zero-Signal D-C Plate D-C Plate Voltage ............... 6000 8000 10000 volts
Zero-Signal D-C Plate D-C Plate Voltage [2]
8000 V
Zero-Signal D-C Plate D-C Plate Voltage ............... 6000 8000 10000 volts
Zero-Signal D-C Plate D-C Plate Voltage [3]
10000 V
Zero-Signal D-C Plate D-C Plate Voltage ............... 6000 8000 10000 volts
Current [1]
5 V
Current ... 05 05 0.5 0.4 amp D-C Grid Voltage ............... —1000 —1300 —1600 volts
Current [2]
5 V
Current ... 05 05 0.5 0.4 amp D-C Grid Voltage ............... —1000 —1300 —1600 volts
Current [3]
0.5 V
Current ... 05 05 0.5 0.4 amp D-C Grid Voltage ............... —1000 —1300 —1600 volts
Current [4]
0.4 V
Current ... 05 05 0.5 0.4 amp D-C Grid Voltage ............... —1000 —1300 —1600 volts
Current [5]
-1000 V
Current ... 05 05 0.5 0.4 amp D-C Grid Voltage ............... —1000 —1300 —1600 volts
Current [6]
-1300 V
Current ... 05 05 0.5 0.4 amp D-C Grid Voltage ............... —1000 —1300 —1600 volts
Current [7]
-1600 V
Current ... 05 05 0.5 0.4 amp D-C Grid Voltage ............... —1000 —1300 —1600 volts
Max.-Signal D-C Plate Peak R-F Grid Voltage [1]
1650 V
Max.-Signal D-C Plate Peak R-F Grid Voltage ........ 1650 1950 2250 wvolts
Max.-Signal D-C Plate Peak R-F Grid Voltage [2]
1950 V
Max.-Signal D-C Plate Peak R-F Grid Voltage ........ 1650 1950 2250 wvolts
Max.-Signal D-C Plate Peak R-F Grid Voltage [3]
2250 V
Max.-Signal D-C Plate Peak R-F Grid Voltage ........ 1650 1950 2250 wvolts
Cu_ffenf ---------- e [1]
26 A
Cu_ffenf ---------- e 26 2.3 3.3 2.8 amps D-C Plate Current ................ 0.83 0.82 0.78 amp
Cu_ffenf ---------- e [2]
2.3 A
Cu_ffenf ---------- e 26 2.3 3.3 2.8 amps D-C Plate Current ................ 0.83 0.82 0.78 amp
Cu_ffenf ---------- e [3]
3.3 A
Cu_ffenf ---------- e 26 2.3 3.3 2.8 amps D-C Plate Current ................ 0.83 0.82 0.78 amp
Cu_ffenf ---------- e [4]
2.8 A
Cu_ffenf ---------- e 26 2.3 3.3 2.8 amps D-C Plate Current ................ 0.83 0.82 0.78 amp
Cu_ffenf ---------- e [5]
830 mA
Cu_ffenf ---------- e 26 2.3 3.3 2.8 amps D-C Plate Current ................ 0.83 0.82 0.78 amp
Cu_ffenf ---------- e [6]
820 mA
Cu_ffenf ---------- e 26 2.3 3.3 2.8 amps D-C Plate Current ................ 0.83 0.82 0.78 amp
Cu_ffenf ---------- e [7]
780 mA
Cu_ffenf ---------- e 26 2.3 3.3 2.8 amps D-C Plate Current ................ 0.83 0.82 0.78 amp