RD20XH

Forced-air-cooled Tesla transmitting triode with thoriated-tungsten filament for low- and high-frequency power amplification. Approximately 20 kW plate dissipation and 15 kV capability support major professional transmitter service.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: 12.5 V / -

Description

Forced-air-cooled thoriated-tungsten transmitting triode with 20 kW anode dissipation for low- or high-frequency 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: 12.5 V
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: 20000 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
12.2 to 12.8 V
Published range
Heater Current
102 A to 110 A
Published range
Maximum Plate Voltage
15000 V
Highest published maximum rating
Maximum Plate Dissipation
20000 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
12.5 V
Heater current
102 A to 110 A
Cooling water flow
500 L/min
Cooling