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Specialized - Magnetron ·Magnetron

4J55

Packaged pulsed magnetron oscillator covering approximately 6.675–6.775 GHz for high-peak-power microwave applications.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
12.6 V / 3.25 A

Description

Packaged pulsed magnetron oscillator covering approximately 6675–6775 MHz.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
-
Base pins
-
Nominal heater voltage
12.6 V
Nominal heater current
3.25 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

Magnetron

X-ray radiationInterelectrode capacitances
Max plate voltage
20000 V
Max plate dissipation
450 W
Max cathode current
35 A

Published ratings and characteristics promoted where clearly stated; identical repeated sections compressed when 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

1938 Raytheon

Published operating points and test conditions from this source.

SECTION 1

Magnetron

Characteristics

  • Heater or filament voltage

    12.6 V

    Published nominal value

  • Heater or filament current

    3.25 A

    Published nominal value

  • Frequency range

    6675 to 6775 MHz

    Published operating band

Other

  • Maximum plate dissipation

    450 W

    Published maximum rating

  • RF power output

    250000 W

    Published output condition

  • Pulse duration

    1 us

    Published pulse condition

  • Duty cycle

    0.002 fraction

    Published duty-cycle condition

  • Operating anode voltage

    18600 V

    Published typical operation

  • Operating anode current

    30 A

    Published typical operation