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Specialized - Klystron ·Klystron

Z2391G

Reflex klystron developed as a frequency-modulated microwave transmitter covering approximately 3.6–4.2 GHz and producing about one watt output.

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

Description

The Z239/1G is a reflex klystron developed for use as a frequency-modulated transmitter, covering 3600 to 4200 Mc/s and capable of approximately one watt 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
6.3 V
Nominal heater current
1 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

Klystron

X-ray radiationInterelectrode capacitances
Max plate voltage
1100 V
Max cathode current
70 mA

Published ratings and characteristics promoted where applicable; remaining useful 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

1946 Standard Telephone and Cables

Published operating points and test conditions from this source.

SECTION 1

Klystron

Characteristics

  • Cathode heating time

    60 s

  • Minimum output power

    1 W

  • Bandwidth to half power

    40 Mc/s

  • Modulation capacity

    3 pF

    Mode7 7.6cm

Other

  • Frequency range

    3600 to 4200 Mc/s

  • Maximum direct resonator voltage

    1100 V

  • Maximum direct reflector voltage

    -700 V

  • Maximum direct resonator current

    70 mA

  • Direct resonator voltage

    950 to 1100 V

    Mode7 7.6cm

  • Direct reflector voltage

    -250 to -150 V

    Mode7 7.6cm

  • Direct resonator current

    60 mA

    Mode7 7.6cm

  • Bandwidth to half power

    45 to 70 Mc/s

    Mode7 7.6cm

  • Modulation sensitivity

    0.5 Mc/s/V

    Mode7 7.6cm

  • Power output

    1.2 W

    Mode7 7.6cm

  • Cooling air flow, gun end uppermost

    7 cu ft/min

    ForcedAirCooling

  • Cooling air flow, gun end down

    5 cu ft/min

    ForcedAirCooling

  • Maximum seal temperature

    90 °C