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

GU93B

Transmitting power tetrode designed for RF amplification, linear/SSB service, oscillation, modulation, broadcasting, or frequency multiplication.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
12.6 V / 4.2 A

Description

The GU-93B is a metal-ceramic tetrode for RF power amplification, rated for operation to 250 MHz and cooled by forced air.

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
4.2 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

Tetrode

X-ray radiationInterelectrode capacitances
Max plate voltage
3800 V
Max screen voltage
450 V
Max plate dissipation
4000 W
Max screen dissipation
20 W
Max grid dissipation
5 W
Max cathode current
2 A

English text used as primary source; Russian text used only to repair/check ambiguous 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

Other

  • Operating Frequency

    250 MHz

  • Maximum Anode Voltage

    3800 V

  • Maximum Anode Dissipation

    4000 W

  • Maximum Grid Dissipation

    5 W

  • Maximum Grid 2 Voltage

    450 V

  • Maximum Grid 2 Dissipation

    20 W

  • Peak/Instantaneous Anode Voltage

    6500 V

  • Anode Current Instantaneous

    9 A

    Sync pulse mode

  • Grid 1 Current DC

    100 mA

Characteristic

  • Filament/Heater Voltage

    12.6 V

  • Mutual Conductance

    75000 to 125000 uS

  • Minimum Cathode Heating Time

    240 s