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Specialized - Magnetron ·Magnetron

JP802B

Forced-air-cooled fixed-frequency X-band pulsed magnetron designed specifically for airborne Doppler-navigation radar equipment.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
6.3 V / 1.2 A

Description

The Mullard JP802B is a forced-air-cooled fixed-frequency X-band pulsed magnetron for airborne Doppler-navigation equipment.

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
6.3 V
Nominal heater current
1.2 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

No fixed ratings are recorded for this section.

Pulsed magnetron interaction structure.

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

1963 Mullard

Published operating points and test conditions from this source.

SECTION 1

Magnetron

Characteristics

  • Heater Voltage

    6.3 V

  • Heater Current

    1.2 A

  • Frequency Minimum

    8.77 GHz

  • Frequency Maximum

    8.83 GHz

  • Nominal Frequency

    8.8 GHz

  • Pulse Voltage Minimum

    750 V

    Ipulse=150mA

  • Pulse Voltage Maximum

    850 V

    Ipulse=150mA

  • RF Pulse Power Output Minimum

    17 W

    Ipulse=150mA

  • Quick Reference Pulse Power Output

    25 W

  • Frequency Pulling Factor

    15 MHz

    VSWR=1.5

  • Frequency Pushing Factor

    0.125 MHz/mA

  • Frequency Temperature Coefficient

    -0.25 MHz/degC

  • Input Capacitance

    9 pF

  • Minimum Heating Time

    2 min

    AmbientAbove0C