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Tube Tinker — Electron Tube Database
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Voltage Tetrode ·Tetrode

2FV6

VHF tetrode designed as the RF amplifier in television tuners, providing high-frequency gain with controlled cutoff characteristics for front-end receiver service.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
B7G
Base pins
7
Nominal heater
2.4 V / 600 mA

Description

Frame-grid tetrode for VHF television-tuner RF amplifier service.

Socket description

Miniature 7-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
B7G
Base pins
7
Nominal heater voltage
2.4 V
Nominal heater current
600 mA
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

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

Tetrode

X-ray radiationInterelectrode capacitances
Plate resistance
100000 Ω
Transconductance
0.008 S
Max plate voltage
250 V
Max screen voltage
180 V
Max plate dissipation
4.5 W
Max screen dissipation
0.5 W
Max cathode current
20 mA
Rectifier max heater-cathode voltage
200 V
Rectifier warm-up time
11 s

Published promoted fields populated from Maximum Ratings / Characteristics / Typical Operation headings.

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

1961 Tung Sol

Published operating points and test conditions from this source.

SECTION 1

Tetrode

Other

  • Plate Voltage

    125 V

    ClassA1

  • Screen Voltage

    80 V

    ClassA1

Characteristic

  • Transconductance

    8000 uS

    ClassA1

  • Plate Resistance

    100000 ohm

    ClassA1

Data set 02

1966 Tung Sol Electronic Tubes 1 of 4

Published operating points and test conditions from this source.

SECTION 1

Tetrode

Characteristic

  • HEATER VOLTAGE

    2.4 V

    ClassA | HEATER VOLTAGE 2.4 VOLTS

  • FOR GRID #

    0 V

    ClassA | FOR GRID #2 VOLTAGES UP TO q0 VOLTS O.5 WAT7

  • FOR GRID #

    180 V

    ClassA | FOR GRID #2 VOLTAGES BETWEEN 90 h 180 VOLTS SEE FIG.#3

  • GRID #

    5 Mohm

    ClassA | GRID #1 CIRCUIT RESISTANCE O.5 MEGOHM

  • HEATER WARM—UP TIME IAPPROX.)* ~

    1 s

    ClassA | HEATER WARM—UP TIME IAPPROX.)* ~.1.0 SECONDS

  • HEATER VOLTAGE Z

    4 V

    ClassA | HEATER VOLTAGE Z.4 VOLTS

  • PLATE VOLTAGE ZZ

    5 V

    ClassA | PLATE VOLTAGE ZZ5 VOLTS

  • PLATE RESISTANCE (APPROX.) O

    1 Mohm

    ClassA | PLATE RESISTANCE (APPROX.) O.1 MEGOHM

  • GRID #

    1.5 mA

    ClassA | GRID #2 CURRENT 1.5 MA.

  • FOR PLATE CURRENT OF

    -6 V

    ClassA | FOR PLATE CURRENT OF 20 µA. -6 VOLTS

Other

  • MAXIMUM PLATE VOLTAGE

    275 V

    ClassA | MAXIMUM PLATE VOLTAGE 275 VOLTS