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Valve Types and Equivalents

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Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

0/20
Triode

B4

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

OA2403
Voltage Stabiliser

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

OB2
Voltage Stabiliser
1957

108C1 108C1 6074 CV1833 CV1833 G108/1K QS1208

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

OC2
Octode

B7

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

OM1
Rectifier HW
1940

CY31 U281

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

OA2WA
Voltage Stabiliser

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

OM10
Triode Hexode
1940
IO
6C31 CV1581 ECH33 ECH35 X147 X61M X61 X65

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

OM3
Double Diode
1940

ARDD5 CV1054 EB34 VR54

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

OM4
Double Diode Triode
1940
IO
6R7G AR21 CV1055 DH147 EBC33 NR48 VR55

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

OM5
Pentode
1940

CV1056 EF36 NR49 VR56

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

OM525
Magnetron

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

OM5A
Pentode
1940

EF37

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

OM5B
Pentode
1940

EF37A

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

OM5C
Pentode
1940
IO
OM5B

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

OM6
Pentode
1940
IO
ARP34 CV1053 EF39 VR53 W147

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

OM8
Octode
1940

AG8 EK32

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

OM9
Pentode
1940

6AG6G CV1052 EL32 KT61 POVT181 VT52

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

OP41
Pentode
1937
B7
Pen4B

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

OP42
Pentode
1937

Pen4B

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

ORA
Triode
1922
B4

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

ORA-B
Triode
1922
I/S1

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

ORP11
Photocell
1959
7633

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

ORP52
Photocell
1959

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

ORP60
Photocell
1959

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

ORP90
Photocell
1958

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

Orpheus MP2
AF Triode
1926

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

OS40/1250
Pentode
1947
UX5

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

OS41/1250
Pentode
1947

804 CV624

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

OS75/60
Thyratron

CV434

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

Osglim
Neon Tube Range (Trade Name)

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

OTH231
Thyratron

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

OTK-4
Triode

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

OTK17

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

OZ4
Rectifier FW

CV692

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

OZ4A
Rectifier FW

CV517

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