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Power - TV Vertical Output ·Triode-Triode

6GF7

Dual triode intended for television vertical-deflection service, combining oscillator/driver and power-output functions where applicable. Manufacturer data emphasize vertical-sweep operation, pulse-voltage capability, and the stronger section’s current and dissipation requirements.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
2
Base
9QD
Socket code
B9E
Base pins
9
Nominal heater
6.3 V / 985 mA

Description

Dissimilar dual triode for combined television vertical-deflection oscillator and vertical-deflection amplifier service.

Socket description

Novar 9-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
9QD
Socket code
B9E
Base pins
9
Nominal heater voltage
6.3 V
Nominal heater current
985 mA
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

9QD - 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

Triode

X-ray radiationInterelectrode capacitances
Plate resistance
17000 Ω
Transconductance
0.0027 S
Amplification factor
46
Max plate voltage
250 V
Max plate dissipation
2 W

Published ratings and characteristics promoted where clearly stated; identical repeated diode/triode sections compressed where applicable.

Section 2

Triode

X-ray radiationInterelectrode capacitances
Plate resistance
2300 Ω
Transconductance
0.007 S
Amplification factor
6.4
Max plate voltage
150 V
Max plate dissipation
11 W

Published ratings and characteristics promoted where clearly stated; identical repeated diode/triode 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

1940 RCA

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristics

  • Heater voltage

    6.3 V

    Published nominal value

  • Heater current

    985 mA

    Published nominal value

  • Transconductance

    2700 µS

    Published operating characteristic

  • Amplification factor

    46

    Published operating characteristic

Other

  • Maximum plate dissipation

    2 W

    Published maximum or stated design maximum

  • Application

    Vertical-deflection oscillator and amplifier

    Television

SECTION 2

Triode

Characteristics

  • Heater voltage

    6.3 V

    Published nominal value

  • Heater current

    985 mA

    Published nominal value

  • Transconductance

    7000 µS

    Published operating characteristic

  • Amplification factor

    6.4

    Published operating characteristic

Other

  • Maximum plate dissipation

    11 W

    Published maximum or stated design maximum