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Specialized - Klystron ·Klystron

SZ22

Rugged water-cooled two-cavity fixed-tuned klystron oscillator for X-band transmitter service near 9.5 GHz, typically producing approximately 10–20 W.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
-

Description

Ferranti SZ22 is a rugged water-cooled two-cavity fixed-tuned klystron oscillator for X-band transmitter service. It is nominally tuned near 9.5 GHz and typically delivers about 10-20 W RF output.

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
-
Nominal heater current
-
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

Klystron

X-ray radiationInterelectrode capacitances
Max plate voltage
8000 V
Max cathode current
40 mA

Klystron beam/resonator anode voltage is promoted to MaxPlateVoltage where applicable; original published labels and conditions are retained in parameter rows.

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 Ferranti

Published operating points and test conditions from this source.

SECTION 1

Klystron

Other

  • Heater voltage

    7 to 8.5 V

  • Heater input power

    15.5 to 21 W

  • Heater resistance at 18 W

    1.9 to 2.1 ohm

  • Cold heater resistance

    0.2 ohm

  • Maximum heater switching surge

    8 A

  • Maximum beam voltage

    8 kV

  • Maximum beam current

    40 mA

  • Typical beam voltage

    7.2 to 7.8 kV

  • Typical beam current

    30 to 40 mA

  • Output power

    10 to 20 W

Frequency

  • Operating frequency

    9500 Mc/s

    Fixed tuned, ±25 Mc/s

  • Tuning range

    0 Mc/s

    Fixed tuned

Cooling

  • Minimum water flow

    0.5 L/min

    At 25 C

Characteristic

  • Beam voltage at low end of mode

    5.6 to 6.2 kV

  • Electronic tuning range

    2 Mc/s

    For 600 V ±100 V

  • Frequency pushing with beam voltage

    42 kc/s/V

  • Frequency pushing with heater current

    150 c/s/A

  • Frequency pulling

    1.1 Mc/s

  • Frequency drift

    <2 kc/s/hour

    Constant temperature

  • Temperature coefficient

    150 kc/s/C