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Voltage Radio Detector Converter ·Diode-Diode-Pentode

6GN6

Remote-cutoff pentode with demodulator diodes for controlled-gain amplification and signal detection. The variable-mu pentode supports gain control while diode sections provide complementary demodulation or control functions.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
3
Base
7FW
Socket code
B9A
Base pins
9
Nominal heater
6.3 V / 300 mA

Description

The 6GN6 combines a remote-cutoff pentode with a demodulator diode on a common cathode. It is intended primarily for high-gain RF or IF amplifier service with simultaneous detection.

Socket description

Small-button Noval 9-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
7FW
Socket code
B9A
Base pins
9
Nominal heater voltage
6.3 V
Nominal heater current
300 mA
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

7FW - Terminal pinout

Electrical assignments shared by every tube using this base designation.

No verified pinout is recorded for this base designation.

Section ratings

3 physical sections, each with unique specifications.

Section 1

Pentode

X-ray radiationInterelectrode capacitances
Plate resistance
200000 Ω
Transconductance
0.0044 S
Max plate voltage
300 V
Max screen voltage
300 V
Max plate dissipation
3 W
Max screen dissipation
0.9 W

Remote-cutoff pentode; promoted values use 250 V typical point where applicable.

Section 2

Diode

X-ray radiationInterelectrode capacitances
Max cathode current
1 mA

Demodulator diode sharing cathode with pentode; continuous diode-current rating 1 mA.

Section 3

Diode

X-ray radiationInterelectrode capacitances

No fixed ratings are recorded for this section.

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

1961 Tung Sol

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

  • Heater voltage

    6.3 V

  • Heater current

    300 mA

  • Plate voltage

    100250 V

    Typical operating conditions

  • Screen voltage

    100100 V

    Typical operating conditions

  • Plate current

    10.811 mA

    Typical operating conditions

SECTION 2

Diode

Other

  • Heater voltage

    6.3 V

  • Heater current

    300 mA

  • Plate voltage

    100250 V

    Typical operating conditions

  • Screen voltage

    100100 V

    Typical operating conditions

  • Plate current

    10.811 mA

    Typical operating conditions

SECTION 3

Diode

Other

  • Heater voltage

    6.3 V

  • Heater current

    300 mA

  • Plate voltage

    100250 V

    Typical operating conditions

  • Screen voltage

    100100 V

    Typical operating conditions

  • Plate current

    10.811 mA

    Typical operating conditions

Data set 02

1966 Tung Sol Electronic Tubes 2 of 4

Published operating points and test conditions from this source.

SECTION 1

Pentode

Capacitance

  • Grid 1 to plate capacitance

    0.0035 pF

  • Input capacitance

    5.5 pF

  • Output capacitance

    5 pF

Other

  • Plate voltage

    200 V

    ClassA1

  • Plate voltage

    250 V

    ClassA1

  • Screen voltage

    100 V

    ClassA1

  • Plate current

    12 mA

    ClassA1;250VPlate

  • Screen current

    4.2 mA

    ClassA1;250VPlate

SECTION 2

Diode

Capacitance

  • Diode plate to grid coupling capacitance

    0.05 pF

Other

  • Average diode current

    1.5 mA

    At10VDC

  • Maximum continuous diode current

    1 mA

    DemodulatorDiode