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Power - Triode ·Triode

835

Thoriated-tungsten transmitting triode for AF power/modulator and RF amplifier/oscillator service, with 75-watt maximum plate dissipation.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
UX4
Base pins
4
Nominal heater
10 V / 3.25 A

Description

Thoriated-tungsten transmitting triode for AF power/modulator and RF amplifier/oscillator service.

Socket description

Medium-shell UX 4-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
UX4
Base pins
4
Nominal heater voltage
10 V
Nominal heater current
3.25 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
0.0036 S
Amplification factor
12
Max plate voltage
1250 V
Max plate dissipation
75 W

Electrical section extracted from supplied RCA data sheet. Reference-only limitations noted in TUBE.Notes.

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

1950 General Electric Transmitting Types

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristic

  • HeaterOrFilamentVoltage

    10 V

  • HeaterOrFilamentCurrent

    3.25 A

Other

  • FrequencyForMaximumRatings

    20 MHz

Data set 02

1956 RCA Transmitting Tubes

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristic

  • HeaterOrFilamentVoltage

    10 V

  • HeaterOrFilamentCurrent

    3.25 A

Other

  • MaximumOperatingFrequency

    100 MHz

    Reduced ratings may apply at upper frequencies

Data set 03

1971 RCA HB3 Binder 6 of 7

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristic

  • Heater/filament voltage nominal

    10 V

    WholeTube

Other

  • Voltage

    10 A

    Published source row

  • Current

    3

    Published source row

  • Current (value 2)

    5

    Published source row

  • Grid to Filament ~` ^

    6

    Published source row

  • ~> ~ ~ ~

    1

    Published source row

  • Voltage

    2.5 A

    Published source row

  • A '

    2 A

    Published source row

  • A ' (value 2)

    5 A

    Published source row

  • Peak Inverse Plate Voltage

    5000 V

    Published source row

  • Peak Plate Current

    1 A

    Published source row

  • Average Plate Current

    250 mA

    Published source row

  • Maximum plate voltage

    5000 V

    Promoted field corroboration