862A

Very-high-power water-cooled transmitting triode for RF amplification, oscillation, and audio-frequency amplifier/modulator service. Rated for about 75 kW plate dissipation, with published two-tube Class B audio output around 90 kW.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: 34.6 V / 207 A

Description

Very-high-power water-cooled three-electrode tube for RF amplifier, oscillator, and audio-frequency power-amplifier/modulator service.

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: 34.6 V
Nominal heater current: 207 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

Amplification factor: 45
Max plate voltage: 20000 V
Max plate dissipation: 75000 W
Max cathode current: 13 A

Published maximum ratings/characteristics promoted where clearly stated in the approved source.

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
45

Other

Maximum Plate Voltage
20000 V
Maximum Plate Dissipation
75000 W
Maximum Cathode Current
13 A
Maximum Signal Power Output
90 kW
AudioFrequency,ClassB
Typical Plate Voltage
15000 V
RF ClassB