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Specialized - Klystron ·Klystron

2K26

Tunable reflex klystron designed as a microwave receiver local oscillator, with mechanical or thermal tuning across its specified operating band.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
Sections
1
Base
-
Socket code
IO
Base pins
-
Nominal heater
6.3 V / 440 mA

Description

Single-resonator reflex klystron with integral cavity and mechanical tuning for microwave local-oscillator service.

Socket description

International Octal

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
IO
Base pins
-
Nominal heater voltage
6.3 V
Nominal heater current
440 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

Klystron

X-ray radiationInterelectrode capacitances
Max plate voltage
330 V
Max cathode current
35 mA

Single-resonator reflex klystron oscillator.

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

1960 RCA Industrial and Communications Types

Published operating points and test conditions from this source.

SECTION 1

Klystron

Application

  • Application

    Microwave local oscillator

Characteristics

  • Electrical tuning range

    55 MHz

Other

  • Useful RF output

    100 mW

Data set 02

1971 RCA HB3 Binder 6 of 7

Published operating points and test conditions from this source.

SECTION 1

Klystron

Other

  • Heater/filament voltage

    6.3 V

  • Heater/filament current

    440 mA

  • Maximum DC resonator voltage

    330 V

  • Maximum negative reflector voltage

    -350 V

  • Maximum resonator current

    35 mA

  • Typical resonator voltage

    300 V

    6660MHz

  • Typical reflector voltage minimum

    -120 V

    6660MHz

  • Typical reflector voltage maximum

    -65 V

    6660MHz

  • Typical resonator current

    25 mA

    6660MHz

  • Electronic tuning range

    55 MHz

    HalfPower

  • Power output

    120 mW

    Typical

  • Peak heater-cathode voltage

    50 V

    BothPolarities

Characteristic

  • Frequency range minimum

    6250 MHz

  • Frequency range maximum

    7060 MHz