Skip to main content
Tube Tinker — Electron Tube Database
Alternatives & variationsDownload PDF datasheet

Specialized - Traveling Wave ·TravelingWave

4009

Helix traveling-wave amplifier for 2–4 GHz broadband receiver and driver service, using periodic permanent-magnet electron-beam focusing.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
Sections
1
Base
-
Socket code
OCTAL6
Base pins
-
Nominal heater
6.3 V / 1.3 A

Description

Helix traveling-wave amplifier with periodic-permanent-magnet focusing for 2–4 GHz driver and wideband receiver service.

Socket description

Octal 6-contact base

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
OCTAL6
Base pins
-
Nominal heater voltage
6.3 V
Nominal heater current
1.3 A
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

TravelingWave

X-ray radiationInterelectrode capacitances
Max cathode current
6 mA

Published maximum ratings and electrical characteristics promoted from the approved source.

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

TravelingWave

Other

  • HeaterVoltageNominal

    6.3 V

    Nominal

  • HeaterCurrentNominal

    1.3 A

    Nominal

  • Maximum Cathode Current

    6 mA

  • CollectorVoltageMaximum

    1000 V

  • HelixVoltageMaximum

    1000 V

  • GridNo2VoltageMaximum

    300 V

Characteristic

  • FrequencyRange

    -

    2 to 4 GHz

  • SaturatedPowerOutput

    0.028 W

    Typical CW operation at 3 GHz

  • SmallSignalGain

    38 dB

    Typical CW operation at 3 GHz

Data set 02

1960 RCA Industrial and Communications Types

Published operating points and test conditions from this source.

SECTION 1

TravelingWave

Characteristics

  • Frequency minimum

    2000 MHz

  • Frequency maximum

    4000 MHz

Construction

  • Focusing method

    Periodic permanent magnet

Other

  • Saturated RF output

    0.028 W

  • Gain

    35 dB