Skip to main content

Voltage Pentode or Tetrode (under 100V) ·Tetrode

R43

Low-voltage bi-grid receiving tube for detection and RF or AF amplification. Its design reduces plate-battery voltage and operating cost in battery receivers.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
-

Description

Low-voltage bi-grid receiving tube for detection and RF or AF amplification, designed to reduce plate-battery voltage and operating cost.

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
170 mA
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
Max plate voltage
40 V

Published ratings and characteristics promoted from the approved 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

1953 La Radiotechnique

Published operating points and test conditions from this source.

SECTION 1

Tetrode

Other

  • HeaterCurrentNominal

    170 mA

    Nominal

  • Heater Voltage

    3.5 to 3.8 V

    Published range

  • Maximum Plate Voltage

    40 V