ZP1044

Forced-air-cooled power tetrode with internal feedback for continuous-wave Class C oscillator service through approximately 1.25 GHz.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: 5.7 V / 24 A

Description

Forced-air-cooled power tetrode with internal feedback, designed for continuous-wave Class-C oscillator service through approximately 1250 MHz.

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: 5.7 V
Nominal heater current: 24 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: 4000 V
Max screen voltage: 600 V
Max plate dissipation: 1500 W
Max screen dissipation: 25 W

CW Class-C absolute maximum plate/screen ratings promoted. Printed Grid-No.2 input limit is represented as maximum screen dissipation/input power; remaining currents and operating values are preserved as parameters.

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

1950 General Electric Transmitting Types

Published operating points and test conditions from this source.

SECTION 1

Tetrode

Other

Operating Frequency Maximum
1250 MHz

Characteristic

Service
CW Class C oscillator

Data set 02

1968 General Electric Co

Published operating points and test conditions from this source.

SECTION 1

Tetrode

Other

Heater Voltage
- to 6 V
Bogey;Maximum=6.0V
Heater Current
22 A to 26 A
AtHeaterVoltage=5.7V
Heater Starting Current
- to 36 A
Heater Cold Resistance
0.02 ohm
Cathode Heating Time
1 to - min
Radiator Hub Temperature Maximum
180 C
Ceramic Temperature Maximum
200 C
DC Grid-No.1 Voltage Maximum
-150 V
ClassC;CW
DC Plate Current Maximum
700 mA
ClassC;CW
DC Grid-No.1 Current Maximum
100 mA
ClassC;CW
Plate Input Maximum
2500 W
ClassC;CW
DC Plate Voltage
3800 V
GroundedGrid;ClassC;CW;UpTo1000MHz
DC Grid-No.2 Voltage
500 V
GroundedGrid;ClassC;CW;UpTo1000MHz
DC Grid-No.1 Voltage
-120 V
GroundedGrid;ClassC;CW;UpTo1000MHz
DC Plate Current
500 mA
GroundedGrid;ClassC;CW;UpTo1000MHz
DC Grid-No.2 Current
22 mA
GroundedGrid;ClassC;CW;UpTo1000MHz
DC Grid-No.1 Current Approximate
75 mA
GroundedGrid;ClassC;CW;UpTo1000MHz
Power Output Approximate Useful
1100 W
GroundedGrid;ClassC;CW;UpTo1000MHz

Capacitance

Input Capacitance G2 tied to G1
17 pF
Output Capacitance G2 tied to G1
5.5 pF