4CX600A

Compact radial-beam tetrode designed for distributed amplifiers and UHF service to approximately 1.3 GHz, with low inductance, low capacitance, and 600 W plate dissipation.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: 6 V / 4.8 A

Description

The 4CX600A is a compact radial-beam tetrode with low lead inductances and low inter- electrode capacitances, designed for use in distributed amplifiers and in UHF service up to 1300 Mc. Maximum plate dissipation is 600 watts. A feature of this tube is the integral screen-cathode by-pass capacitor. One side of the heater is terminated in a ‘‘deck’’ attached to this capacitor while the other heater contact is brought out on a pin on the tube base. The control grid is brought out to four threaded pins on the base.

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 V
Nominal heater current: 4.8 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

Beam Power

X-ray radiationInterelectrode capacitances

Transconductance: 0.025 S
Amplification factor: 8
Max plate voltage: 3000 V
Max screen voltage: 400 V
Max plate dissipation: 600 W
Max screen dissipation: 15 W
Max grid dissipation: 3 W
Max cathode current: 500 mA

Single electrical section; values mapped from printed ratings/characteristics.

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

1962 Eimac

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Other

The
0 a
The 4CX600A is a compact radial-beam tetrode with low lead inductances and low inter-
to
600 watts
to 1300 Mc. Maximum plate dissipation is 600 watts.
Heater Voltage - - - - - - -~
6 Volts
Heater Voltage - - - - - - -~ - 6.0 Volts
Current (average)
4.8 Amperes
Current (average) - - - - - - 4.8 Amperes
Transconductance (I=
25000 mA
Transconductance (I= 300 mA) - - - ~ - 25,000 umhos
Input - - - - ~
42 uuf
Input - - - - ~ - - - 42 uuf
Output -~ - - - - - ~
10 uuf
Output -~ - - - - - ~ - 10 uuf
Screen-cathode
110 uuf
Screen-cathode - - - - - - - 110 uuf
DC Plate Voltage
3000 Volts
DC Plate Voltage- - 3000 Max. Volts
DC Screen Voltage
400 Volts
DC Screen Voltage 400 Max. Volts
DC Grid Voltage - - - - - = - - =
150 Volts
DC Grid Voltage - - - - - = - - =150 Max. Volts
DC Plate Current
500 mA
DC Plate Current - - - - - - - 500 Max. mA
Plate Dissipation- - - - ~
600 Watts
Plate Dissipation- - - - ~ - - - 600 Max., Watts
Screen Dissipation
15 Watts
Screen Dissipation - - - - - - - 15 Max. Watts
Grid Dissipation =
3 Watts
Grid Dissipation = - - - - - - - 3 Max. Watts

Data set 02

1965 Eimac Tube Manual

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Characteristic

Heater/Filament Voltage
6 V
Heater/Filament Current
4.8 A
Amplification Factor
8
Transconductance
25000 uS

Other

Maximum DC Plate Voltage
3000 V
Maximum DC Screen Voltage
400 V
Maximum Plate/Cathode Current
500 mA
Maximum Plate Dissipation
600 W
Maximum Screen Dissipation
15 W
Maximum Grid Dissipation
3 W
Frequency for Maximum Ratings
1300 MHz

Construction

Cooling
Forced air