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

GU47A

High-power Soviet transmitting tetrode for professional RF service to approximately 70 MHz.

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

Description

Power tetrode for RF amplification. 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
6.3 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
6000 V
Max screen voltage
1200 V
Max plate dissipation
6000 W
Max screen dissipation
300 W
Max grid dissipation
50 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

  • Transconductance

    36000 to 44000 uS

  • Amplification Factor

    8 to 12

Capacitance

  • Input Capacitance

    100 pF

    max

  • Output Capacitance

    19 pF

    max

  • Transfer Capacitance

    0.5 pF

    max

Other

  • Filament Starting Current

    90 A

  • Operating Frequency

    70 MHz