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Power - Triode ·Triode

899A

High-power transmitting triode for RF amplification, oscillation, modulation, or related transmitter and industrial service.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
15 V / 180 A

Description

Water-cooled high-power triode for modulation, amplification and RF oscillator 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
15 V
Nominal heater current
180 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
Max plate voltage
18000 V
Max plate dissipation
30000 W
Max cathode current
3 A

Published ratings and characteristics promoted from the approved Westinghouse source.

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

1947 Westinghouse

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Power Output

    35000 W

    ClassC;RFPowerAmplifier_Oscillator

  • Power Output

    10000 W

    PlateModulated;ClassC

Application

  • Application

    Modulator_Amplifier_Oscillator text