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EL153

Radiation-cooled 70 W RF tetrode designed for short-wave and VHF transmitting service. Its power construction supports professional radio-frequency generation and amplification.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: 6.3 V / 1.55 A

Description

Radiation-cooled 70-watt RF tetrode for short-wave and VHF transmitting 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: 6.3 V
Nominal heater current: 1.55 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

Tetrode

X-ray radiationInterelectrode capacitances

Transconductance: 0.004 S
Max plate voltage: 650 V
Max screen voltage: 300 V
Max plate dissipation: 40 W
Max screen dissipation: 5 W
Max grid dissipation: 1 W
Max cathode current: 230 mA

Promoted values come from the supplied datasheet; additional ratings, characteristics, and operating points are retained in TUBE_SECTION_PARAMETER.

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

1959 Telefunken

Published operating points and test conditions from this source.

SECTION 1

Tetrode

Other

Plate peak voltage
1250 V
Plate voltage
650 V
ClassB;RFAmplifier;Wavelength=3m
Screen-grid voltage
210 V
ClassB;RFAmplifier;Wavelength=3m
Plate current
130 mA
ClassB;RFAmplifier;Wavelength=3m
Drive power
4 W
ClassB;RFAmplifier;Wavelength=3m
RF output power
50 W
ClassB;RFAmplifier;Wavelength=3m
RF output power
30 W
ClassB;RFAmplifier;Wavelength=1.7m

Capacitance

Input capacitance
14.5 pF
Output capacitance
5.5 pF
Grid-to-plate capacitance maximum
0.35 pF