Tube-number record

21EP4-A

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BrandGeneral Electric

ClassCathode-Ray Tube

BaseDuodecal

Filament6.3 V @ 600 mA

Construction

Primary TypeMagnetic focus and deflection

EnvelopeGlass

Base MaterialPlastic

SectionsSingle

Heater NotesIndirectly heated

Plate Voltage18000 V

Grid 2 Voltage500 V

Grid 1 Voltage-125 V

H-C Voltage180 V

Key Features

Mode	Plate V	Gm (µmhos)	Rp (Ω)	µ	Plate mA
Television Receiver	16000 V	—	—	—	—

The electron gun is designed for use with an external single-field ion-trap magnet.

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