GL893A

Very-high-power General Electric transmitting triode for professional RF service. Approximately 20 kW plate dissipation and 20 kV capability support major fixed transmitter operation in the lower RF range.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: 10 V / 61 A

Description

Three-electrode water-cooled power tube for high-power RF amplification, oscillation, and Class B modulation.

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: 10 V
Nominal heater current: 61 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: 0.016 S
Amplification factor: 36
Max plate voltage: 20000 V
Max plate dissipation: 20000 W

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

1968 General Electric Co

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristic

GridPlateCapacitance
33 pF
Approximate
Input Capacitance
48 pF
Approximate

Other

MaximumRatedFrequency
5 MHz
FullRatings