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Voltage Radio Detector Converter ·Diode-Diode-Pentode

6H8G

Common-cathode double-diode pentode designed for audio-frequency amplification, signal detection, and automatic-gain-control rectification.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
3
Base
-
Socket code
-
Base pins
8
Nominal heater
6.3 V / 300 mA

Description

Double-diode pentode with common cathode for AF amplification, detection and automatic gain-control rectification.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
-
Base pins
8
Nominal heater voltage
6.3 V
Nominal heater current
300 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

3 physical sections, each with unique specifications.

Section 1

Pentode

X-ray radiationInterelectrode capacitances
Plate resistance
650000 Ω
Transconductance
0.0024 S
Amplification factor
1550
Max plate voltage
250 V
Max screen voltage
125 V

Section 2

Diode

X-ray radiationInterelectrode capacitances

No fixed ratings are recorded for this section.

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

1960 Mazda

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

  • Typical Plate Voltage

    250 V

    PentodeSection

  • Typical Screen Voltage

    100 V

    PentodeSection

  • Typical Plate Current

    5.7 mA

    PentodeSection

  • Typical Screen Current

    1.8 mA

    PentodeSection

  • CommonCathode

    1

    BothDiodesAndPentode