X2159

Enormous water-cooled ceramic-metal transmitting tetrode intended for megawatt-class broadcast and VLF communications installations. Its directly heated cathode, very high plate voltage, and approximately 1.25 MW plate-dissipation capability place it among extreme fixed-station RF power devices.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: 18.5 V / 700 A

Description

The EIMAC X2159 is a water-cooled ceramic/metal megawatt-class power tetrode for broadcast and vlf communications.

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: 18.5 V
Nominal heater current: 700 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

Tetrode

X-ray radiationInterelectrode capacitances

Amplification factor: 4.5
Max plate voltage: 22500 V
Max screen voltage: 2500 V
Max plate dissipation: 1250000 W
Max screen dissipation: 15000 W
Max grid dissipation: 4000 W
Max cathode current: 126 A

Promoted from printed general-characteristics and maximum-ratings/operating data.

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

1962 Eimac

Published operating points and test conditions from this source.

SECTION 1

Tetrode

Characteristic

Amplification factor
4.5

Other

Maximum plate voltage
22500 V
Maximum screen voltage
2500 V
Maximum plate dissipation
1250000 W
Maximum screen dissipation
15000 W
Maximum grid dissipation
4000 W
Maximum cathode/plate current
126 A