6AD6G

Double-diode tuning indicator providing visual receiver indication through changes in fluorescent shadow angle.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: 7AG
Socket code: B7
Base pins: 8
Nominal heater: 6.3 V / 150 mA

Description

Double-diode tuning indicator with shadow-angle indication.

Socket description

Medium 7-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: 7AG
Socket code: B7
Base pins: 8
Nominal heater voltage: 6.3 V
Nominal heater current: 150 mA
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

7AG - Terminal pinout

Electrical assignments shared by every tube using this base designation.

Terminal	Section	Connection	Evidence
PIN1IS	A	IS — Internal Screen Original EIA source label IS; manufacturer confirmation pending	Unverified EIA Base Connections, printed page 128, 7AG
PIN2H	—	H — Heater Original EIA source label H; manufacturer confirmation pending	Unverified EIA Base Connections, printed page 128, 7AG
PIN32G1	B	G1 — Control Grid Original EIA source label 2G1; manufacturer confirmation pending	Unverified EIA Base Connections, printed page 128, 7AG
PIN41G1	A	G1 — Control Grid Original EIA source label 1G1; manufacturer confirmation pending	Unverified EIA Base Connections, printed page 128, 7AG
PIN5T	A	T — Target Original EIA source label T; manufacturer confirmation pending	Unverified EIA Base Connections, printed page 128, 7AG
PIN7H	—	H — Heater Original EIA source label H; manufacturer confirmation pending	Unverified EIA Base Connections, printed page 128, 7AG
PIN8K	A	K — Cathode Original EIA source label K; manufacturer confirmation pending	Unverified EIA Base Connections, printed page 128, 7AG

Section ratings

1 physical section, each with unique specifications.

Section 1

Tuning Indicator

X-ray radiationInterelectrode capacitances

Max plate voltage: 150 V
Rectifier max heater-cathode voltage: 100 V

Published promoted fields populated from the datasheet; identical repeated sections compressed 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

1938 National Union

Published operating points and test conditions from this source.

SECTION 1

Tuning Indicator

Characteristic

Heater Current
0.15 amp
Published source value; see source line context.

Other

Target Voltage
100 volts
Published source value; see source line context.
Control Electrode —
90 volts
Published source value; see source line context.

Data set 02

195X General Electric Essential Characteristics

Published operating points and test conditions from this source.

SECTION 1

Tuning Indicator

Other

Target voltage maximum
150 V
TuningIndicator
Target voltage minimum
100 V
TuningIndicator
Target voltage
150 V
TuningIndicator;Shadow=0deg

Characteristic

Ray-control voltage range
4-75 V
Shadow=0deg
Ray-control voltage range
4-8 V
Shadow=90deg

Data set 03

1961 Tung Sol

Published operating points and test conditions from this source.

SECTION 1

Tuning Indicator

Other

Target Voltage
150 V
IndicatorService

Characteristic

Target Current
3 mA
TargetVoltage=150V