GL5518

Medium-mu General Electric transmitting triode for substantial Class C RF power amplification. Approximately 4 kW plate dissipation and 7 kV capability support several kilowatts of grounded-filament or grounded-grid transmitter output.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: 6.3 V / 235 A

Description

The GL-5518 is a three-electrode transmitting tube designed for Class-C radio-frequency amplifier service, with a forced-air-cooled anode and ratings to 110 MHz.

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: 6.3 V
Nominal heater current: 235 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: 21
Max plate voltage: 7000 V
Max plate dissipation: 4000 W
Max cathode current: 1.3 A

Forced-air-cooled transmitting triode; Class-C absolute maximum ratings promoted.

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

Other

DC Plate Voltage
6600 V
ClassC

Characteristic

DC Plate Current
1.3 A
ClassC
Driving Power
180 W
GroundedFilament
Power Output
6.5 kW
GroundedFilament
Power Output
7.5 kW
GroundedGrid