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Specialized - Magnetron ·Magnetron

CV6108

Fixed-frequency forced-air-cooled pulsed magnetron covering 8770–8830 MHz, with integral magnet and waveguide output. Typical pulse operation is about 9 kW peak RF output at approximately 5.5 kV peak anode voltage.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
2 V / 5 A

Description

Fixed frequency pulse magnetron Freguency range .« . . . . . . . 8770108830 MHz Typical peak outputpower . . . . . . . . . . 90 kW Magnet e e e e e s . . integral Output e e e e e e . . no. 16 waveguide (0900 x 0.400 inch internal) Coupler . . . . . . . . . . . UG-40B/U (5985-99-083-0051) Cooling C e e e s e forced-air

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
2 V
Nominal heater current
5 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.

Microwave/special-function section; schema has no directly applicable promoted electrode fields; published electrical data preserved in 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

1971 English Electric Valve

Published operating points and test conditions from this source.

SECTION 1

Magnetron

Other

  • Heater current at 6.3V

    5 A

    Heater current at 6.3V . e . . . . . . . . . 05 A

  • Cathode heating time (mlnlmum) (see note2)

    2 min

    Cathode heating time (mlnlmum) (see note2) ... 2 min

  • Heater voltage

    7

    Heater voltage . . . P <N 4 7.0 \

  • Heater starting current (peak)

    3 A

    Heater starting current (peak) e 3.0 A

  • Anode voltage {peak)

    6 kV

    Anode voltage {peak) . . . . . . . . - 6.0 kV

  • Anodecurrent(peak)

    5.5 A

    Anodecurrent(peak) . . . . . . . . 35 5.5 A

  • Rate of rise of voltage pulse (at 4.5A peak

    4.5

    Rate of rise of voltage pulse (at 4.5A peak

  • anode current) (see note6)

    75 kV

    anode current) (see note6) . . . . . . — 75 kV/us

  • Heater voltage

    5.4 V

    Heater voltage 5.4 V

  • Anode current (peak)

    45 A

    Anode current (peak) 45 A

  • Pulse length

    1

    Pulse length . 1.0 uS

  • Pulse repetition rate

    1000 s

    Pulse repetition rate 1000 p.p.s.

  • Anode voltage (peak)

    5.5 kV

    Anode voltage (peak) 5.5 kV

  • Output power {peak)

    9 kW

    Output power {peak) 9.0 kW

  • Output power {mean)

    9 W

    Output power {mean) 9.0 W

  • Heater voltage (for test)

    6.3

    Heater voltage (for test) 4.5 6.3 \

  • Anode current {mean)

    45 mA

    Anode current {mean) 9.0 45 mA

  • Anode voltage {peak)

    5.7 kV

    Anode voltage {peak) . . . . 53 5.7 - - kV

  • R.F. bandwidth (see note@)

    1.25 MHz

    R.F. bandwidth (see note@) . . -— 2.5 - 1.25 MHz

  • Output power (mean)

    125 W

    Output power (mean) 125 - W min

  • (anode current 7.5mA mean)

    3 MHz

    (anode current 7.5mA mean) 3.0 — MHz max

  • 1. With no anode input power.

    1

    1. With no anode input power.

  • For average pulse input powers greater than 25 watts the heater voltage

    25

    For average pulse input powers greater than 25 watts the heater voltage

  • mum capacitance of 4000pF shunted across the heater directly at the

    4000

    mum capacitance of 4000pF shunted across the heater directly at the

  • input terminals; in some cases a capacitance as high as 2uF may be nec-

    2 a

    input terminals; in some cases a capacitance as high as 2uF may be nec-

  • ween 0 and —55°C the cathode heating time is 3 minutes minimum

    3 °C

    ween 0 and —55°C the cathode heating time is 3 minutes minimum.

  • voltage pulse above 80% amplitude. Any capacitance in the viewing

    80

    voltage pulse above 80% amplitude. Any capacitance in the viewing

  • With anode temperature 40°C + 10°C measured at the point indicated

    10 °C

    With anode temperature 40°C + 10°C measured at the point indicated

  • 10

    1 a

    10. Measured with a v.s.w.r. greater than 1.5:1 in all phases of the mis-

  • Pulses are defined as missing when the r.f. energy level is less than 70%

    70

    Pulses are defined as missing when the r.f. energy level is less than 70%

  • of the normal energy level in the frequency range 8770 to 8830MHz

    8830

    of the normal energy level in the frequency range 8770 to 8830MHz.

  • pulses applied during any consecutive 5 minute interval of a 15 minute

    15 a

    pulses applied during any consecutive 5 minute interval of a 15 minute

  • 12

    12 a

    12. When a signal of the same frequency as the magnetron operating fre-

  • system. The v.s.w.r. is tested to be greater than 8:1

    1 v

    system. The v.s.w.r. is tested to be greater than 8:1.

  • 13

    6.3

    13. Measured with heater voltage of 6.3V and no anode input power, the

  • heater current limits are 0.43A minimum, 0.60A maximum

    0.6

    heater current limits are 0.43A minimum, 0.60A maximum.

  • 14

    14

    14. Design test only. The maximum frequency change with anode tempera-

  • 1. Anode temperature to be measured at this point

    1

    1. Anode temperature to be measured at this point.