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Voltage Pentode - Remote Cutoff (single) ·Pentode

1P5GT

GT-envelope remote-cutoff RF pentode for variable-gain battery receiver service. It retains the controlled-transconductance RF amplifier function of the 1P5 family in a tubular glass envelope.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
5Y
Socket code
IO
Base pins
7
Nominal heater
1.4 V / 50 mA

Description

GT-envelope remote-cutoff RF pentode for variable-gain battery receiver service. Electrical ratings and representative operating data were extracted from the approved manual page.

Socket description

International Octal

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
5Y
Socket code
IO
Base pins
7
Nominal heater voltage
1.4 V
Nominal heater current
50 mA
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

5Y - 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

Pentode

X-ray radiationInterelectrode capacitances
Plate resistance
800000 Ω
Transconductance
0.00075 S
Max plate voltage
110 V
Max screen voltage
110 V

Published ratings and characteristics promoted where clearly legible in 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

195X General Electric Essential Characteristics

Published operating points and test conditions from this source.

SECTION 1

Pentode

Characteristics

  • Input capacitance

    3 pF

  • Output capacitance

    10 pF

  • Grid-to-plate capacitance

    0.007 pF

Other

  • Plate voltage

    90 V

    ClassA; OperatingPoint1

  • Screen voltage

    90 V

    ClassA; OperatingPoint1

  • Control-grid bias

    0 V

    ClassA; OperatingPoint1

  • Plate current

    2.3 mA

    ClassA; OperatingPoint1

  • Screen current

    0.7 mA

    ClassA; OperatingPoint1