6GS7

Medium-mu triode and sharp-cutoff pentode frequency changer for VHF television tuners.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 2
Base: 9GF
Socket code: B9A
Base pins: 9
Nominal heater: 6.3 V / 375 mA

Description

Medium-mu triode and sharp-cutoff pentode frequency changer for VHF television tuners.

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: 9GF
Socket code: B9A
Base pins: 9
Nominal heater voltage: 6.3 V
Nominal heater current: 375 mA
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

9GF - Terminal pinout

Electrical assignments shared by every tube using this base designation.

Terminal	Section	Connection	Evidence
PIN1Base Pin	B	G1 — Control Grid Literal label 2G1; manufacturer confirmation pending	Unverified EIA Base Connections printed p132, 9GF
PIN2Base Pin	B	P — Plate (Anode) Literal label 2P; manufacturer confirmation pending	Unverified EIA Base Connections printed p132, 9GF
PIN3Base Pin	A	G3 — Suppressor GridGroup 9GF3 Literal label 1G3; manufacturer confirmation pending	Unverified EIA Base Connections printed p132, 9GF
PIN3Base Pin	—	K — CathodeGroup 9GF3 Literal label K; manufacturer confirmation pending	Unverified EIA Base Connections printed p132, 9GF
PIN4Base Pin	—	H — Heater Literal label H; manufacturer confirmation pending	Unverified EIA Base Connections printed p132, 9GF
PIN5Base Pin	—	H — Heater Literal label H; manufacturer confirmation pending	Unverified EIA Base Connections printed p132, 9GF
PIN6Base Pin	A	P — Plate (Anode) Literal label 1P; manufacturer confirmation pending	Unverified EIA Base Connections printed p132, 9GF
PIN7Base Pin	A	G2 — Screen Grid Literal label 1G2; manufacturer confirmation pending	Unverified EIA Base Connections printed p132, 9GF
PIN8Base Pin	A	G3 — Suppressor GridGroup 9GF8 Literal label 1G3; manufacturer confirmation pending	Unverified EIA Base Connections printed p132, 9GF
PIN8Base Pin	—	K — CathodeGroup 9GF8 Literal label K; manufacturer confirmation pending	Unverified EIA Base Connections printed p132, 9GF
PIN9Base Pin	A	G1 — Control Grid Literal label 1G1; manufacturer confirmation pending	Unverified EIA Base Connections printed p132, 9GF

Section ratings

2 physical sections, each with unique specifications.

Section 1

Triode

X-ray radiationInterelectrode capacitances

Transconductance: 0.0055 S
Amplification factor: 17
Max plate voltage: 125 V
Max plate dissipation: 1.5 W
Max cathode current: 15 mA

Medium-mu triode frequency-changer unit.

Section 2

Pentode

X-ray radiationInterelectrode capacitances

Plate resistance: 350000 Ω
Transconductance: 0.012 S
Max plate voltage: 250 V
Max screen voltage: 150 V
Max plate dissipation: 2 W
Max screen dissipation: 0.5 W
Max cathode current: 18 mA

Sharp-cutoff pentode frequency-changer unit.

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

1975 RCA RC30

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

Peak Heater-Cathode Voltage
200 V
AbsoluteValue
Average Heater-Cathode Voltage
100 V
AbsoluteValue

Characteristic

Typical Plate Voltage
100 V
ClassA;TriodeUnit
Typical Plate Current
14 mA
ClassA;TriodeUnit

SECTION 2

Pentode

Characteristic

Typical Plate Voltage
170 V
ClassA;PentodeUnit
Typical Screen Voltage
150 V
ClassA;PentodeUnit
Typical Plate Current
10 mA
ClassA;PentodeUnit
Typical Screen Current
3.3 mA
ClassA;PentodeUnit
Conversion Transconductance
4500 uS
FrequencyChanger