6S7G

Remote-cutoff RF pentode designed for high-frequency amplifier service. Its extended-control characteristic permits automatic gain regulation in receiver RF stages while maintaining useful signal gain.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: 7
Socket code: IO
Base pins: 7
Nominal heater: 6.3 V / 150 mA

Description

Remote-cutoff RF pentode for high-frequency amplifier service.

Socket description

International Octal

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

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

7 - 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: 1000000 Ω
Transconductance: 0.00125 S
Max plate voltage: 300 V
Max screen voltage: 100 V

Promoted from clearly identified printed ratings/characteristics; additional operating points and capacitances retained in TUBE_SECTION_PARAMETER.

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

1937 Raytheon Radio Receiving Tubes

Published operating points and test conditions from this source.

SECTION 1

Pentode

Capacitance

Grid-to-plate capacitance
0.007 pF
Section1
Input capacitance
4.6 pF
Section1
Output capacitance
7.8 pF
Section1

Other

Plate voltage
135 V
ClassA
Screen voltage
67.5 V
ClassA
Grid bias
-3 V
ClassA
Plate current
3.7 mA
ClassA
Screen current
0.9 mA
ClassA
Plate voltage
250 V
ClassA
Screen voltage
100 V
ClassA
Plate current
8.5 mA
ClassA
Screen current
2 mA
ClassA

Characteristic

Plate resistance
680000 Ω
135VPlate
Transconductance
1250 µS
135VPlate
Plate resistance
630000 Ω
250VPlate
Transconductance
1750 µS
250VPlate

Data set 02

1961 Tung Sol

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

Heater voltage
6.3 V
Heater current
150 mA
Plate current
3.78.5 mA
Typical operating conditions