7.0 - Radar Tubes

Tubes for pulse modulators, spark gap types

1B22

Spark gap, pulse modulator Two used in AN/APS-4 to drive 2J21 or 725A magnetron 75A peak current at 3kV

1B29

Spark gap, pulse modulator Scaled-down variant of 1B22 30A peak current at 3 kV

1B42

Spark gap, high-power pulse modulator Mercury in iron sponge electrode surface 300 A peak. Three used in 1,4 MW pulser

1B45

Spark gap, pulse modulator 450 A pulses

24B1

Trigatron spark gap

24B9

Trigatron spark gap 150 kW pulse power Similar to CV6008

BL-735

Spark gap, pulse modulator

CV85

Trigatron spark gap 150 kW pulse power 6.6 kV min. working voltage

CV100

Trigatron spark gap 256 kW pulse power 5.5 kV min. working voltage

CV125 / REL 38C

Trigatron spark gap 530 kW pulse power 12 kV min. working voltage

CV349

Trigatron spark gap 160 kW pulse power Variant of CV6008

CV486

Trigatron spark gap 525 kW pulse power 12 kV min. working voltage

CV6008

Trigatron spark gap 160 kW pulse power

REL-38C / CV125

Trigatron spark gap 530 kW pulse power 12 kV min. working voltage

VX6012

Experimental trigatron spark gap

Tubes for pulse modulators, hard switching tubes

3D21A, B

Tetrode pulser, low power WWII

3E29

Dual power tetrode, all glass septar base Pulse rated selection of 829B transmitting tube, WWII

4PR60

Tetrode, ruggedized pulse modulator Registered in the sixties as 8252 20 kV, 18 A, 60 W Replaces715C and 5D21

5D21

Tetrode, pulse modulator Quad-cathode improved 715B 20 kV, 15 A, 60 W WWII

6C21

Triode, pulse modulator Also known as 1000 Spec 30 kV, 15 A, 300 W WWII, rated for long pulses

356B

VHF transmitting triode Used in the pulse modulator of CXAS prototypes in 1940 Western Electric

701A

Beam power tetrode Four electrode sets of 350A inside 12.5 kV, 10 A, 100 W WWII, used to drive the 700A-D magnetron

715A / 715C

Tetrode, pulse modulator Four in-line cathodes, gold-plated single grid WWII - 60 W, about 15 kV, 10 A peak

AX10318-1

Power tetrode pulser, oil-cooled Intended for X-ray pulse modulators 100 kV, 10 A, 1.5 kW power dissipation Equivalent to TH-5186

CV57

Tetrode beam power, prototype GEC E1271 11 kV, 5 A pulsed. 15 W plate dissipation

CV72

Power tetrode, pulse driver 1.5 kV, 3.5 A

CV174

Power tetrode pulser 19 kV, 5 A. 15 W plate dissipation Derived from GEC E1459 prototype

ML-7003

Power triode, screened grid High power pulse modulator 40 kV, 80 A - 2.5 MW output pulses

PL-185

Triode, pulse modulator or oscillator Equivalent to 527A Eimac 30 kV at 60 A, 100 A peak emission Four used in SK-1M giving 1 MW at 210-225 MHz WWII

Tubes for pulse modulators, thyratron types

1258

Hydrogen thyratron, low-power modulator 1 kV, 20 A peak. 10 kW peak pulses Tung-Sol, 1963

3C45

Hydrogen thyratron, modulator 3 kV, 35 A peak, 45 mA average

4C35

Hydrogen thyratron, modulator 8 kV, 90 A peak, 100 mA average

5C22

Hydrogen thyratron, modulator 16 kV, 325 A peak, 200 mA average Internal hydrogen reservoir

5948

Large hydrogen thyratron, modulator 25 kV, 1000 A peak, 1 A average Internal hydrogen reservoir. 1955

5957

Compact hydrogen thyratron, modulator 8 kV, 90 A peak, 100 mA average 1956

6130

Thyratron hydrogen, modulator Improved 3C45 w/corona ring 1953

7191

Miniature hydrogen thyratron 1.2 kV, 20 A peak, 50 mA average 1958

7384

Large hydrogen thyratron, modulator 25 kV, 1000 A peak, 1.25 A average Internal hydrogen reservoir. EEV, 1962

7665A

Hydrogen thyratron triode, ceramic body 16 kV, up to 50.000 pps operation Internal hydrogen reservoir Kuthe Labs, 1977

CV22

Mercury vapour thyratron, radar modulator 20 kV, 22 A, 500 pps BT45, WWII

CV381 / BT85

Hydrogen-filled thyratron 10 kV, 90 A, 100 mA average VX4024 prototype This sample comes from the HMS Trenchant submarine vessel, decommissioned in 1963

CV2110

Hydrogen-filled thyratron 8 kV, 200 A, 65 mA average BT83 prototype

CV2158

Hydrogen-filled thyratron 14 kV, 400 A, internal hydrogen reservoir VX3166 prototype

CV6022

Hydrogen-filled thyratron, improved 5C22 16 kV, 325 A, internal hydrogen reservoir Equivalent to 8503

CV6051 - CX1120

Hydrogen thyratron, modulator 16 kV, 400 mA average, 3.2 MW peak out power Internal hydrogen reservoir

CV6241- CX1157

Ceramic hydrogen thyratron, modulator 20 kV, 500 mA average, 3.5 MW peak out power Internal hydrogen reservoir

CV8563 - CX1140

High power hydrogen thyratron, modulator 25 kV, 1250 mA average, 1000 A peak 12.5 MW peak out power Internal hydrogen reservoir

PL522

Hydrogen thyratron, modulator Philips equivalent for 5C22 16 kV, 325 A peak, 200 mA average Internal hydrogen reservoir

Tubes for pulse modulators, ancillary types

TG57

Protective spark gap

TG-59

Protective spark gap

TG-60

Protective spark gap, 50 kV, 6 kA surge

Tubes for pulse modulators, rectifiers

2-150

Half-wave rectifier, gridless 152TL 30 kV PIV, 150 mA

2X1000A

Half-wave rectifier, forced-air cooled 35 kV PIV, 1.25 A

3B24

Half-wave rectifier, 2.5/5.0 V filament 20 kV PIV, 30/60 mA

3B28

Half-wave rectifier, xenon-filled replacement for 866A 10 kV PIV, 250 mA

CV5

Half-wave rectifier, mercury-vapour filled 20 kV PIV, 1.25 A, 5.0 A peak

CV128

Half-wave rectifier, high vacuum 9 kV PIV, 250 mA, 2.0 A peak

CV490

Half-wave rectifier, high vacuum damping diode 20 kV PIV, 350 mA rms, 10 A peak Same as 19H5, VX6021 prototype

DCX4/1000

Half-wave rectifier, xenon-filled 10 kV PIV, 250 mA Similar to 3B28

4B31

Vacuum diode rectifier/clipper 16 kV PIV, 60 mA rms

15R

Vacuum rectifier, gridless 15E 20 kV PIV, 30 mA rms Identical to 4B30

19H5

See CV490

577

HV clipper/rectifier, graphite anode 25 kV, 1.5 A peak, 300 mA average 1950

583

HV clipper/rectifier, graphite anode 17 kV, 65 mA average

589

HV clipper/rectifier, external anode 10 kV, 65 mA average, 2 A peak 16 kV oil-immersed

705A

HV rectifier, gridless 356A 30 kV PIV, 100 mA average

6102-WL

HV clipper/rectifier, low-profile, oil-cooled 40 kV PIV, 150 mA average Westinghouse, 1954

6303 / X-80

Large HV clipper/rectifier, graphite anode 40 kV PIV, 800 mA average United Electronics, 1952

6339

HV clipper/rectifier, external anode 16 kV oil-immersed, 65 mA average Amperex, 1955

8020

HV rectifier, also known as 2-100A or VT-267 40 kV PIV, 100 mA average

ESU112

HV rectifier / clipper = CV8265 40 kV, 2.5 A peak, 350 mA average

RKR-72

HV rectifier 22 kV PIV, 20 mA average Raytheon, 1943

RX-235

HV rectifier 22 kV PIV, 20 mA average

VH3

HV rectifier

WL-531

HV rectifier, eq. to ML-531, VT-141 50 kV, 290 mA average Westinghousee, 1943

VX6122

VX6122 / 19H12 / CV5718 HV power damping diode 25 kV PIV, 30 A peak, 50 W AEI Ediswan, 1961