RE20XL

Forced-air-cooled 20-kilowatt coaxial power-beam transmitting tetrode designed for oscillator and RF power-amplifier service to approximately 220 MHz.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: 12.6 V / 110 A

Description

Directly heated 20 kW coaxial power-beam transmitting tetrode for oscillator and RF power-amplifier service, rated to 220 MHz and cooled by forced air.

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: 12.6 V
Nominal heater current: 110 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

Beam Power

X-ray radiationInterelectrode capacitances

Transconductance: 0.06 S
Max plate voltage: 8000 V
Max screen voltage: 1250 V
Max plate dissipation: 20000 W
Max screen dissipation: 800 W
Max grid dissipation: 500 W
Max cathode current: 28 A

Semantically matched promoted fields only.

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

Beam Power

Capacitance

Control-grid input capacitance
90 pF
Published interelectrode capacitance
Plate output capacitance
35 pF
Published interelectrode capacitance

Other

Maximum frequency
220 MHz
Published maximum/rated frequency
Heater data
6-7 V; 180-220 A
Published heater voltage/current range or limit

Data set 02

1966 Tesla Tubes

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Other

of
6 to 7 V
If
180 A to 220 A
3KCHJIYATALU4OHHLIE AHHbIE Ua max.
8 kV
Wa max.
20 kW
Ug2 max.
1250 V
Wg2 max.
800 W
Wg1 max.
500 W
Ik sp max.
28 A
f max.
220 Mc/s
OXJ
1 A

Capacitance

Cgs
90 pF
Ca
35 pF

Characteristic

S
60 mA/V
I.
60 A