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Voltage Dual Tetrode ·Tetrode-Tetrode

GMI6

Russian double tetrode designed for pulse modulators in RF equipment, with high peak-current capability in each power section.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
2
Base
-
Socket code
-
Base pins
-
Nominal heater
12.6 V / 1.1 A

Description

The GMI6 is a double tetrode used in pulse modulators for RF equipment.

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
12.6 V
Nominal heater current
1.1 A
Parallel heater voltage
6.3 V
Parallel heater current
2.2 A
Series capable
Yes

Terminal pinout

Electrical assignments shared by every tube using this base designation.

No verified pinout is recorded for this base designation.

Section ratings

2 physical sections, each with unique specifications.

Section 1

Tetrode

X-ray radiationInterelectrode capacitances
Max plate voltage
4000 V
Max screen voltage
800 V
Max cathode current
15 A

Representative row for two identical pulse-tetrode sections.

Section 2

Tetrode

X-ray radiationInterelectrode capacitances
Max plate voltage
4000 V
Max screen voltage
800 V

Second identical physical pulse-tetrode section; added to align rows with SectionCount.

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

1968 Electronintorg

Published operating points and test conditions from this source.

SECTION 1

Tetrode

Characteristic

  • Heater current

    1 A to 1.2 A

  • Peak anode current minimum

    8 A

    EachSection

  • Cutoff voltage minimum

    125 V

    EachSection

Other

  • Peak grid 2 current maximum

    3 A

    EachSection

  • Warm-up time maximum

    60 s

Capacitance

  • Input capacitance

    11 to 18 pF

    EachSection

  • Output capacitance

    4.2 to 6.2 pF

    EachSection

  • Transfer capacitance maximum

    0.2 pF

    EachSection