Electronic tube and vacuum tube catalog

Base

Refer to variations

Socket code

UX4

Sections

1

Heater

10 V / 8.25 A

Plate

1,500 V / 125 W

Ik max

200 mA

rP

8,900 Ω

gm

4.5 mA/V

μ

40

4 pins - UX4 - Medium-shell UX 4-contact

Western Electric thoriated-tungsten air-cooled transmitting triode for RF power service. Its 125 W plate dissipation, 1.5 kV plate rating, relatively high amplification factor, and low capacitances suit medium-power transmitters through roughly 30 MHz.

Base

Refer to variations

Socket code

UX4

Sections

1

Heater

10 V / 3.25 A

Plate

1,500 V / 125 W

Ik max

210 mA

gm

4.8 mA/V

μ

50

4 pins - UX4 - Medium-shell UX 4-contact

Transmitting power triode intended for RF amplifier and oscillator service, with manufacturer ratings emphasizing radio-frequency output, substantial plate loading, and professional transmitter operation.