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4K3SJ

Compact air-cooled permanent-magnet-focused power-amplifier klystron covering approximately 1.7–2.4 GHz and delivering at least one kilowatt output.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: -

Description

The EIMAC 4K3S] is an air cooled, permanent mag- net focused, power-amplifier klystron designed to oper- ate at frequencies from 1700 to 2400 MHz. It will deliver a minimum output power of 1 kilowatt with minimum power gain of 40 decibels. The 4K3S] is intended for use in applications where light weight and compactness are essential.

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: -
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

Klystron

X-ray radiationInterelectrode capacitances

No fixed ratings are recorded for this section.

Single electrical section; values mapped from printed ratings/characteristics. Klystron represented as SectionType Other because the canonical section vocabulary has no Klystron section type.

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

Klystron

Other

ate at frequencies from
2400 MHz
ate at frequencies from 1700 to 2400 MHz. It will deliver
a minimum output power of
1 a
a minimum output power of 1 kilowatt with minimum
Frequency
2400 MHz
Frequency - - - - - - - - - - - 1700-2400 MHz
Minimum Power Gain
40 db
Minimum Power Gain - - - - - - - - - 40 db
SIEl (SIS |
6 a
SIEl (SIS |9 S| a 6 ot || o
Cooling - - - - - - - -« - - - + - - Forced Air (
20 °C
Cooling - - - - - - - -« - - - + - - Forced Air (20°C at sea level)
RF Output Coupling - - - - - - -«
50 ohm
RF Output Coupling - - - - - - -« - - - . . 154 inch, 50-ohm line
DC BEAM CURRENT
0.6 AMPERE
DC BEAM CURRENT - - - - - - - - - - - - - 0.6 AMPERE
DC BEAM INPUT POWER S
4 KILOWATTS
DC BEAM INPUT POWER S 4 KILOWATTS
COLLECTOR DISSIPATION
4 KILOWATTS
COLLECTOR DISSIPATION - - - - - - - - - - - 4 KILOWATTS
CATHODE SEAL TEMPERATURE
150 DEGREES C
CATHODE SEAL TEMPERATURE - - - - - - - - - - 150 DEGREES C
Output Power
1.03 kilowatts
Output Power - - - - - - - - 17 1.08 1.03 kilowatts
DC Beam Current
0.56 ampere
DC Beam Current - - - - - - - - 0.54 0.54 0.56 ampere