GU88A

Directly heated metal-ceramic power triode for RF oscillator and power-amplifier service. Water cooling of the anode and forced air elsewhere support approximately 40 kW plate dissipation and plate ratings to 12 kV.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: 26 V / -

Description

The GU-88A is a metal-ceramic directly heated power triode used as an RF oscillator and power amplifier. It uses water cooling for the anode and forced-air cooling for the remaining envelope.

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: 26 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

Triode

X-ray radiationInterelectrode capacitances

Max plate voltage: 12000 V
Max plate dissipation: 40000 W
Max grid dissipation: 5000 W

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

Triode

Other

Operating Frequency
30 MHz
Maximum Anode Voltage
12000 V
Maximum Anode Dissipation
40000 W
Maximum Grid Dissipation
5000 W
Filament Starting Current Peak
1150 A
Output Power
published kW
Frequencies up to 22 MHz

Characteristic

Filament/Heater Voltage
26 V
Static Amplification Factor
36 to 55