RD18YA

Water-and-air-cooled Tesla transmitting triode for RF power amplification, oscillation, and Class B audio-frequency service. Approximately 18 kW plate dissipation and 15 kV capability support major transmitter and modulator power.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: -

Description

Water-and-air-cooled transmitting triode with 18 kW anode dissipation for RF power amplification, oscillation, and Class-B AF power amplification up to 30 MHz.

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: -
Nominal heater current: -
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: 15000 V
Max plate dissipation: 18000 W

Promoted fields populated from published maximum-ratings/characteristic tables where OCR semantics were unambiguous.

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

195X Tesla

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

Heater Voltage
18 to 20 V
Published range
Heater Current
94 A to 104 A
Published range
Maximum Plate Voltage
15000 V
Highest published maximum rating
Maximum Plate Dissipation
18000 W
Maximum Frequency
30 MHz

Data set 02

1966 Tesla Tubes

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

Heater voltage
18 to 20 V
Heater current
94 A to 104 A
Cooling water flow
18 L/min
Cooling