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Voltage Radio Detector Converter ·Octode

FC13

Radio receiver frequency changer combining oscillator and mixer functions for superheterodyne conversion. Its multi-grid construction translates incoming RF signals to the intermediate frequency within the receiver front end.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
SideContact
Socket code
B7
Base pins
7
Nominal heater
13 V / 200 mA

Description

Indirectly heated octode frequency changer for AC/DC mains superheterodyne receivers.

Socket description

Medium 7-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
SideContact
Socket code
B7
Base pins
7
Nominal heater voltage
13 V
Nominal heater current
200 mA
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

SideContact - 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

Octode

X-ray radiationInterelectrode capacitances
Max plate voltage
200 V
Max screen voltage
90 V

Octode frequency changer; published characteristics and limiting values.

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

1958 Mullard Receiving Tubes

Published operating points and test conditions from this source.

SECTION 1

Octode

Characteristics

  • Plate voltage

    200 V

  • Oscillator-anode voltage

    90 V

  • Screen-grid voltage

    70 V

  • Plate current

    1.6 mA

  • Conversion conductance

    600 uS

Data set 02

1963 Mullard

Published operating points and test conditions from this source.

SECTION 1

Octode

Characteristic

  • HeaterOrFilamentVoltage

    13 V

  • HeaterOrFilamentCurrent

    200 mA

  • Application

    Superheterodyne frequency changer

Other

  • Maximum Plate Voltage

    200 V

  • MaximumOscillatorAnodeVoltage

    90 V

  • Maximum Screen Voltage

    90 V

  • NormalPlateVoltage

    200 V

  • NormalOscillatorAnodeVoltage

    90 V