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Specialized - Magnetron ·Magnetron

EM747

Voltage-tunable L-band magnetron oscillator covering approximately 0.4–1.2 GHz. Typical RF output is about 75–250 mW, with frequency controlled by anode voltage and an injection-anode electrode incorporated into the oscillator system.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
6.3 V / 800 mA

Description

(] : Magnetron Frequency Range - - - - - - 0.4-1.2 kMc Anode Voltage - - - - - - = 660-1980V Cathode Current - - - - - - 2-8 mA Typical Output Power - - - - - 75-250 mW L-BAND Anode FM Sensitivity - - - - - .65 Mc/V Injection Anode Voltage - - - - 200V OSCILLATOR

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
800 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

Magnetron

X-ray radiationInterelectrode capacitances
Max plate voltage
2000 V

Promoted fields populated only where the published value maps directly to the schema; device-specific values retained as parameters.

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

1962 Eimac

Published operating points and test conditions from this source.

SECTION 1

Magnetron

Other

  • Power

    50 mW

    Power 50 mW Min.

  • Frequency Range [1]

    0.4

    Frequency Range - - - - - - 0.4-1.2 kMc

  • Frequency Range [2]

    -1.2

    Frequency Range - - - - - - 0.4-1.2 kMc

  • Anode Voltage - - - - - - = [1]

    660

    Anode Voltage - - - - - - = 660-1980V

  • Anode Voltage - - - - - - = [2]

    -1980

    Anode Voltage - - - - - - = 660-1980V

  • Cathode Current [1]

    2 mA

    Cathode Current - - - - - - 2-8 mA

  • Cathode Current [2]

    -8 mA

    Cathode Current - - - - - - 2-8 mA

  • Typical Output Power [1]

    75 mW

    Typical Output Power - - - - - 75-250 mW L-BAND

  • Typical Output Power [2]

    -250 mW

    Typical Output Power - - - - - 75-250 mW L-BAND

  • Anode FM Sensitivity

    65 MHz

    Anode FM Sensitivity - - - - - .65 Mc/V

  • Injection Anode Voltage

    200

    Injection Anode Voltage - - - - 200V OSCILLATOR

  • Injection Anode Current

    0 mA

    Injection Anode Current - - - - 0 mA

  • Heater Voltage (AC or DC)

    63

    Heater Voltage (AC or DC) - - - 6,3V

  • Heater Current (ACor DC)

    0.8

    Heater Current (ACor DC) - - - 0.8 A

  • Load Impedance

    50 ohm

    Load Impedance - - - - - - 50 ohms

  • INJECTION ANODE VOLTAGE =

    140

    INJECTION ANODE VOLTAGE =140 ¥

  • Anode Voltage - -~ [1]

    2000

    Anode Voltage - -~ - - - - - - 2000V 200

  • Anode Voltage - -~ [2]

    200

    Anode Voltage - -~ - - - - - - 2000V 200

  • Cathode Current

    20

    Cathode Current - - - - - - - - 20mA ] u &

  • Injection Anode Voltage [1]

    500

    Injection Anode Voltage - - - - - - 500V 100

  • Injection Anode Voltage [2]

    100

    Injection Anode Voltage - - - - - - 500V 100

  • Injection Anode Current

    1 mA

    Injection Anode Current - - - - - - 1 mA

  • Length - - - - - - == - =

    4.5 MHz

    Length - - - - - - == - = 4.5 inches FREQUENCY Mc

  • Published value

    1

    1. COOLING: To insure optimum tube performance the magnet temperature should be maintained

  • Published value [1]

    3

    3. TEMPERATURE STABILITY: The permanent magnet for the EM-747 has been temperature

  • Published value [2]

    747

    3. TEMPERATURE STABILITY: The permanent magnet for the EM-747 has been temperature

  • The temperature/frequency coefficient for the EM [1]

    747

    The temperature/frequency coefficient for the EM-747 package is typically .02% of the operating

  • The temperature/frequency coefficient for the EM [2]

    2

    The temperature/frequency coefficient for the EM-747 package is typically .02% of the operating

  • frequency per degree Centrigrade. Thus, for an operating frequency of

    1000 MHz

    frequency per degree Centrigrade. Thus, for an operating frequency of 1000 megacycles, the

  • temperature/frequency coefficient is typically

    200

    temperature/frequency coefficient is typically 200 kilocyclesper degree Centrigrade. A positive

  • temp%raéture compensation of

    8

    temp%raéture compensation of .008% of the operating frequency per degree Centigrade can be

  • Published value

    4

    4. ANODE VOLTAGE: The operating frequency is a function of the anode voltage; therefore any

  • VOLTAGE DECAL [1]

    3.64

    VOLTAGE DECAL 3.640 [ 3.67

  • VOLTAGE DECAL [2]

    3.67

    VOLTAGE DECAL 3.640 [ 3.67