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Valve Types and Equivalents

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Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1
GP Triode
1926

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1A3
Diode
1943
B7G
1D13 CV753 DA90

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1A4E
VM RF Pentode
1940

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1A5G
Output Pentode
1940
IO
CV755

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1A5GT
Pentode
1941
IO
CV756

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1A6
Heptode
1940

1A6S CV757

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1A6E
Heptode
1940
UX6

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1A7
Heptode
1935

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1A7G
Heptode
1937

CV1800

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1A7GT
Heptode
1937
IO
CV1802 DK32 VT-147 X14

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1AB5
Pentode
1949
B8B

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1AB6
Heptode
1955
B7G
1C3 DK96 DK98 X25

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1AC6
Heptode

B7G
1C2 DK92 X18 X20

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1AD4
Pentode
1956

CV2237 DF62 XFR1

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1AH5
Diode Pentode
1953

1FD1 DAF96 ZD25

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1AJ4
Pentode
1953
B7G
1F1 DF96 W25

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1AP5/P11
Cathode-Ray Tube
1951

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1B24
TR Cell
1945
CV725

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1B24A
TR Cell

CV3548

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1B26
TR Cell
1946
CV576

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1B29
TR Cell
1946

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1B32
Spark Gap
1944
CV2648 WL-532

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1B35A
TB Cell (X-Band)
1945

BS412

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1B37
TB Cell (X-Band)
1945

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1B3GT
Rectifier EHT
1946
IO
1G3GTA 1Z7S CV1830

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1B40
TR Cell
1945
CV2914

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1B46
TR Cell
1945

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1B49
TR Cell
1945

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1B4E
Pentode

UX4
32

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1B59
Glow Modulator
1946
IO
22M1

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1B7GT
Heptode
1940

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1B5L
Double Diode Triode

1H6G

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1B86
Thyrode
1950

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1B8GT
Diode Triode Pentode
1939
IO

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1C1
Heptode
1947
B7G
1R5 CV782 DK91 X17

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1C2
Heptode
1952
B7G
1AC6 DK92 X18 X20

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1C3
Heptode
1957

1AB6 DK96 X25

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1C5G
Output Pentode
1940

CV1803 DL35 N14

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1C5GT
Pentode
1941
IO
1C5GT/G CV1803 DL35 N14

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1C5GT/G
Pentode
1941
IO
1C5GT CV1805 DL35 N14

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1C6
Heptode
1940
UX6
1C6S

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1C610
Triode

B4

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1C6E
Heptode
1936
UX6

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1C6F
Heptode

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1CP1
Cathode-Ray Tube
1953
B8B
CV2302 DH3/91

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1D13
Diode

1A3 CV753 DA90

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1D5
Rectifier HW
1935
B5
40SUA C10B CV1267 RZ U4020 UR1C

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1D5GP
Pentode
1937

CV705

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1D5GT
Pentode
1940
IO
CV1806

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1D6
Rectifier HW
1947
UX6

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1D7
Heptode
1937
IO

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1D8GT
Diode Triode Pentode
1941
IO
CV1811 VT-148

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1E7G
Double Pentode
1936
IO

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1E7GT
Double Pentode

IO
CV1812

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1EP1
Cathode-Ray Tube
1956

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1F1
Pentode
1953

1AJ4 DF96 W25

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1F2
Pentode

1L4 CV1758 DF92

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1F3
Pentode
1948
B7G
1T4 CV785 DF91 W17

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1F4
Pentode
1936
UX5
CV767

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1F5
Pentode
1936

1F5G KL35

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1F5G
Pentode
1936
IO
1F5 CV768 KL35

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1F6
Double Diode Tetrode
1936
UX6

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1F7G
Double Diode Tetrode
1937

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1FD1
Diode Pentode
1953

1AH5 DAF96 ZD25

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1FD9
Diode Pentode
1947
B7G
1S5 CV784 DAF91 ZD17

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1G35P
Thyratron (Hydrogen)

FX2505

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1G45P
Thyratron (Hydrogen)

FX227

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1G4GT/G
Triode

IO
CV1817

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1G6G
Double Triode
1939
IO
1G6 1G6GT CV772

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1G6GT
Double Triode
1939
IO
1G6 1G6G CV772

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1H33
Heptode

DK91

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1H4G
Triode
1936
IO
CV774

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1H5
Diode Triode
1939

CV1818 VT-223

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1H5G
Diode Triode
1940
IO
CV1818 VT-223

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1H5GT
Diode Triode
1940
IO
CV1820 DAC32 VT-223

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1H6G
Double Diode Triode
1937
IO
1B5L

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1J5G
Power Pentode
1938

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1J6G
Double Triode (Class B)
1936
IO

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1K24
Rectifier HW

3B24W

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1L4
Pentode
1941
B7G
1F2 CV1758 DF92

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1L6
Heptode
1953

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1LA4
Output Pentode
1940
B8B

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1LA6
Heptode
1939
B8B
CV775

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1LA6E
Heptode
1940

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1LB4
Pentode
1939
B8B
CV776

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1LC6
Heptode
1939
B8B
CV778 VT-178

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1LD5
Diode Pentode
1939
B8B
CV779

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1LE3
Triode
1940
B8B
VT-239

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1LG5
Pentode
1949
B8B

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1LH4
Diode Triode
1940
B8B
VT-177

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1LN5
Pentode
1940
B8B
CV781

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1M1
Tuning Indicator

B8D & B8D/F
1M3 1N3 DM70 DM71 Y25

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1M3
Tuning Indicator
1956

DM70

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1N3
Tuning Indicator
1960

DM71

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1N5G
Pentode
1937
IO
CV1821 DF33 Z14

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1N5GT
Pentode
1937
IO
1N5G CV1823 DF33 VT-146 Z14

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1N6G
Diode Power Pentode
1940

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1P1
Pentode
1953

3C4 DL96 N25

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1P10
Pentode
1948

3S4 CV820 DL92 N17

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1P11
Pentode
1946
B7G
3V4 DL94 N19

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1P11/3V4
Pentode
1946

3V4 DL94 N19

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1P39
Photocell
1946
CE29 IP39

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1P40
Photocell
1946

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1P5GT
RF Pentode
1940

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1Q5
Pentode

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1Q5G
Pentode
1940

CV1824

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1Q5GT
Pentode
1940
IO
CV1826

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1R5
Heptode
1940
B7G
1C1 CV782 DK91 X17

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1R5/DK91
Heptode
1949

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1S2
Rectifier EHT
1955
B9A
DY86

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1S2A
Rectifier EHT
1955

CV10761 DY87

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1S4
Output Beam Tetrode
1940
B7G
CV783 DL91

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1S5
Diode Pentode
1940
B7G
1FD9 CV784 DAF91 ZD17

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1S5/DAF91
Diode Pentode

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1T2
Rectifier EHT

R16 U37

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1T4
VM RF Pentode
1940
B7G
1F3 CV785 DF91 VT-173 W17

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1T4/DF91
Pentode
1947

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1T5GT
Beam Tetrode
1939
IO

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1U4
Pentode
1946
B7G
CV2507 DF904 DT153

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1U5
Diode Pentode
1945
B7G
CV3912

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1V
Rectifier HW
1939
UX4
6Z3 CV1999

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1V2
Rectifier EHT
1950
B9A
CV3994

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

1X2B
Rectifier EHT
1955
B9A
CV5427 R19+C358

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