6P8G

Triode-hexode frequency changer for superheterodyne receiving equipment. The triode provides local oscillation while the hexode performs mixing with useful conversion gain and high output resistance.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 2
Base: 8O
Socket code: IO
Base pins: 8
Nominal heater: 6.3 V / 800 mA

Description

Triode-hexode frequency changer.

Socket description

International Octal

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: 8O
Socket code: IO
Base pins: 8
Nominal heater voltage: 6.3 V
Nominal heater current: 800 mA
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

8O - Terminal pinout

Electrical assignments shared by every tube using this base designation.

No verified pinout is recorded for this base designation.

Section ratings

2 physical sections, each with unique specifications.

Section 1

Hexode

X-ray radiationInterelectrode capacitances

Plate resistance: 750000 Ω
Transconductance: 0.00065 S
Max plate voltage: 250 V
Max screen voltage: 80 V

Published source values promoted where applicable.

Section 2

Triode

X-ray radiationInterelectrode capacitances

Max plate voltage: 150 V

Published source values promoted where applicable.

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

1948 Brimar Radio Valve Manual

Published operating points and test conditions from this source.

SECTION 1

Hexode

Characteristic

Conversion Conductance
650 uS
FrequencyChanger

SECTION 2

Triode

Characteristic

Heater Voltage
6.3 V
Heater Current
800 mA

Data set 02

1954 STC Brimar

Published operating points and test conditions from this source.

SECTION 1

Hexode

Characteristics

Conversion transconductance
650 uS
ConverterService