Skip to main content
Tube Tinker — Electron Tube Database
Alternatives & variationsDownload PDF datasheet

Power - Tetrode (NOT beam) (over 1000V 100W) ·Tetrode

GU44A

Very-high-power Russian RF tetrode producing approximately 70 kW output at 32 MHz.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
12.5 V / -

Description

Very-high-power RF tetrode. Extracted from the English electrical and limit-operating tables of the bilingual datasheet.

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
12.5 V
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

Tetrode

X-ray radiationInterelectrode capacitances
Max plate voltage
12000 V
Max screen voltage
2000 V
Max plate dissipation
50000 W
Max screen dissipation
3200 W
Max grid dissipation
1200 W

English text primary; Russian used only to verify/repair OCR.

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

  • Filament Voltage

    12 to 13 V

  • Operating Frequency at 70kW

    32 MHz

Other

  • Filament Starting Current

    300 A

  • Negative Grid1 Voltage

    1500 V

    absolute

  • Output Power

    70 kW

  • Envelope/Stem/Seal Temperature

    150 C

  • Screen Voltage

    2000 V

    published limit