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Power - Triode ·Triode

8119

Forced-air-cooled coaxial ceramic transmitting triode for RF amplification, oscillation, and frequency multiplication. Approximately 400 W plate dissipation and low-capacitance construction support substantial transmitter output through the UHF region, approaching 900 MHz.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
3.4 V / 19 A

Description

Forced-air-cooled coaxial ceramic transmitting triode for HF/UHF amplifier, oscillator and multiplier service.

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
3.4 V
Nominal heater current
19 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
33
Max plate dissipation
400 W

Forced-air-cooled coaxial ceramic transmitting triode for HF/UHF amplifier, oscillator and multiplier service.

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

1963 Amperex Condensed

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Plate voltage

    2000 V

    RFPower

  • Plate current

    400 mA

    RFPower

  • Power output

    510 W

    RFPower

  • Grid voltage

    -140 V

    RFPower

  • Grid current

    120 mA

    RFPower

  • Maximum frequency

    900 MHz

    RFPower

  • Additional published output figure

    85 W

    Published as 510 + 85

Capacitance

  • Grid-to-plate capacitance

    6.5 pF

  • Input capacitance

    11.5 pF

  • Output capacitance

    ('<', 0.12) pF

  • Plate-to-filament capacitance

    - to 0.12 pF