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Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

D
Triode
1919

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

D.06
Triode
1924
B4

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

D.06HF
Triode

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

D024
Triode

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

D026
Triode

B4

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

D030
Triode

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

D051
Triode

CV1

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

D-1
Triode
1920
B4

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

D1
Diode
1937
B3G
ARD2 CV1078 T4D VR78

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

D12F
Pentode

D1F

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

D13/611GH
Cathode-Ray Tube

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

D1300
Double Diode
1935
Ct5
2D13 DD620

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

D15
Barretter

IO
CV1539

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

D152
Double Diode

6AL5 6D2 6D2 D77 EAA91 EB91

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

D1F
Pentode

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

D210SW
Triode
1936
B4

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

D296
Triode

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

D2F
Pentode

D12F

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

D.3
Triode
1924
B4

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

D3-130GH
Cathode-Ray Tube
1976

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

D37/30
Rectifier EHT

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

D3a
Pentode
1958
B9A

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

D3F
Pentode

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

D4
Triode
1933
B5
354V 41MHL AC/HL AR17 CV399 CV1037 HL4 MH4 NR31 VR37

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

D41
Double Diode
1935
B5
CV1170 CV1187 NR46 NR66

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

D42
Diode
1936

ARD4 CV557 CV1302 CV2394

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

D4-New-Power
Triode

B4

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

D5-100W
Cathode-Ray Tube

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

D5-192
Cathode-Ray Tube

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

D5-194GH
Cathode-Ray Tube

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

D43
Diode

B4

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

D61
Diode

CV1092 EA50

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

D63
Double Diode
1937
IO
6H6GT 6H6G ARDD3 CV554 CV1301 CV1929 EB34

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

D7/200GH
Cathode-Ray Tube
1969
B13B

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

D7/201GH
Cathode-Ray Tube

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

D77
Double Diode
1949
B7G
6AL5 6D2 CV140 D152 DD6 EAA91 EB91

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DA
Triode
1935

4DI C30B CV1109 HL1320 HL13C

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DA1
Triode
1936

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DA100
Triode
1933

BS100 CV1219 MZ1-100 NT36

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DA2
Triode
1936

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DA3
Triode
1936

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DA30
Triode
1935

CV563 CV1178 DO30 NR56 V503 VT111

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DA41
Triode
1939
UX4
CV1076 TZ40 VT76

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DA42
Triode
1956
UX4
3B/402A CV2394 ES1101

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DA60
Triode
1929
L4
660T BS60 CV527 CV1206 DO60 ES60 MZ05-60

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DA90
Diode

1A3 1D13 CV753

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DAC1
Diode Triode
1939
Ct8
CV2887

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DAC32
Diode Triode

IO
1H5 1H5GT CV1820 HD14

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DAF70
Diode Pentode

CV2104

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DAF91
Diode Pentode
1946
B7G
1FD9 1S5 CV784 ZD17

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DAF96
Diode Pentode
1953
B7G
1AH5 1AM5 1FD1 ZD25

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DB4-1
Cathode-Ray Tube
1953
B9G

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DB4-2
Cathode-Ray Tube

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DC/P
Triode
1931

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DC2/200
Rectifier FW
1932

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DC/SG
Tetrode
1931
B5

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DC2/Pen
Pentode
1931
B5
DC/2Pen

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DC2/SGVM
Tetrode
1932
B4

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DC70
Triode

B8D & B8D/F
CV2275

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DC762A
Rectifier HW

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DC80
Triode

CV2172

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DCC90
Double Triode
1950
B7G
3A5 CV808

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DCH11
Triode Hexode
1941
Footless

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DD101
Double Diode
1938
MO

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DD13
Double Diode

B5

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DD207
Double Diode
1937
B4

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DD4
Double Diode
1934

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DD41
Double Diode
1938
MO
CV1403

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DD6
Double Diode
1936

6AL5 6D2 CV140 D77 EB91

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DD620
Double Diode
1934
B5
ZD

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DD818
Double Diode

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DDA/13
Double Diode
1935

2D13C

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DDA/13L
Double Diode
1935
Ct5
2D13A

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DDL4
Double Diode
1937
B5
2D4A A20B CV1119 D41 V914 VR119

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DDPP4M
Double Diode Pentode

CV519 Pen4DD

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DDR2
Pentode

CV173 EF55

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DDT
Double Diode Triode
1933
B7
11A2 A23A AC/HL/DD HD4 MHD4 TDD4

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DDT215
Double Diode Triode
1937
B5

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DDT4
Double Diode Triode
1936

11A2 A23A AC/HL/DD HD4 MHD4 TDD4

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DE06LF?
Triode

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DE11
Triode
1924
B4

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DE25HF
Triode
1926
B4

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DE2HF
Triode
1925
B4

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DE2LF
Triode
1925
B4

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DE2
Triode
1924
B4

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DE3
Triode
1924
B4

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DE4
Triode
1924
B4

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DE5
Triode
1924
B4
CV2891

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DE5A
Triode
1924
B4

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DE5B
Triode
1924
B4
CV2892

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DE6
Triode
1924
B4

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DEH612
Triode
1927
B4

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DEL410
Triode
1927
B4

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DEM2
Triode

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DEP215
Triode
1927
B4

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DEP240
Triode
1927
B4

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DEQ
Triode
1923
CV1156 NR18

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DER
Triode
1921
B4
POVT33

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DES1
Thermal Delay Switch

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DET1
Triode
1924
L4

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DET1SW
Triode

161D CV2895

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DET10
Triode

CV2900

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DET12
Triode

B4
4304CB 834 CV1062 CV1288 NT58 TY1-50 VT62

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DET16
Triode
1954
CV1363

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DET18
Triode

3-50AG 35T CV419 CV668

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DET19
Double Triode
1938
UX7
2C34 4074A CV18 CV1061 RK34 VT61

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DET1SW
Triode

CV2895

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DET2
Triode

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DET20
Triode

IO
CV6 CV1135 NR80 VR135

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DET22
Triode

CV273 CV315 CV5956 EC55 ME1001 TD03-10

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DET23
Triode

CV354 TD03-5

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DET24
Triode

CV397 TD04-20

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DET25
Triode

L4
AT35 CV1025 VT25

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DET28
Triode

B9G

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DET29
Triode
1959
CV2397

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DET3
Triode

7886 CV1034 VT34

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DET5
Triode

CV384 CV1223 NT40

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DET8
Triode

CV2898

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DET9
Triode

CV2899

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DF.ORA
Triode
1924
B4

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DF1
Pentode
1939
Ct8
CV2907

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DF11
Pentode
1940
Footless

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DF33
Pentode
1939
IO
1N5GT CV1823 Z14

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DF61
Pentode

CV2371

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DF62
Pentode

CV2237 R1AD4 XFR1

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DF64
Pentode
1953
CV2260

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DF66
Pentode
1951
CV2107

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DF70
Pentode
1955

CK505AX CV386 CV443

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DF72
Pentode

CV2101

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DF73
Pentode

CV2103

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DF75
Pentode

CV2102

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DF91
Pentode
1947
B7G
1F3 1T4 CV785 W17

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DF92
Pentode
1949

1F2 1L4 CV1758

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DF96
Pentode
1953
B7G
1AJ4 1F1 W25

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DF97
Pentode
1954
B7G
1AN5

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DFA0
Triode
1924

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DFA1
Triode
1924

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DFA2
Triode
1924

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DFA3
Triode
1925
B4

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DFA4
Triode
1924
B4

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DFA5
Triode
1926

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DFA6
Triode
1926

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DFA7
Triode
1926

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DFA8
Triode
1927
B4

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DFA9
Triode
1928
B4

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DeForest
Triode

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

Demonstration
Triode

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DG12C
Indicator

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DG13-2
Cathode-Ray Tube

CV2191

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DG2
Bi-grid
1931

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DG210
Bi-grid
1931
B4

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DG407
Bi-grid
1932

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DG4-1
Cathode-Ray Tube
1953
B9G

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DG7-5
Cathode-Ray Tube
1950
B9G
CV2175

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DG7-31
Cathode-Ray Tube
1957

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DG7-32
Cathode-Ray Tube
1955
CV2431

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DG7-36
Cathode-Ray Tube
1955

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DH
Triode
1931
B5

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DH101
Double Diode Triode

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DH107
Double Diode Triode
1951
B7G

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DH109
Triple Diode Triode

10LD12 UABC80

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DH118
Double Diode Triode

10LD3 14L7 UBC41

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DH119
Double Diode Triode

10LD13 14L7 UBC81

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DH142
Double Diode Triode

10LD3 141DDT 14L7 DH18 UBC41

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DH147
Double Diode Triode

6R7G DL63

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DH149
Double Diode Triode

B8B
7C6 CV887

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DH150
Double Diode Triode
1948
B8A
62DDT 6CV7 6LD3 DH718 EBC41

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DH18
Double Diode Triode

10LD3 141DDT 14L7 DH141 UBC41

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DH2
Double Diode

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

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

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DH30
Double Diode Triode
1934

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DH42
Double Diode Triode
1936

11A2 AC/HL/DD DDT4 DDT H4D MHD4

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DH63
Double Diode Triode
1937
IO
6Q7G CV587 W1526

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DH63M
Double Diode Triode
1937
IO
6Q7G CV587 W1526

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DH7-91
Cathode-Ray Tube
1960
B9G
24D 3AFP31

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DH718
Double Diode Triode
1955

6CV7 6LD3 EBC41

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DH719
Triple Diode Triode
1955
B9A
6AK8 6LD12 EABC80

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DH76
Triode
1947
IO
12Q7GT DL74 DL74M

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DH77
Double Diode Triode
1950
B7G
6AT6 CV452 EBC90

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DH81
Pentode
1947
B8B
6Q7GT 7B6 CV882

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DK1
Heptode
1939
Ct8
CV2910

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DK32
Heptode
1945
IO
1A7G 1A7GT CV1802 X14

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DK40
Heptode
1948

MDK40

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DK91
Heptode
1947
B7G
1C1 1H33 1R5 CV782 X17

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DK92
Heptode
1951
B7G
1AC6 1C2 CV5172 X18 X20

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DK96
Heptode
1953
B7G
1AB6 1C3 X25

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DL1
Pentode
1939
Ct8

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DL145
Double Diode Triode

10LD11

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DL2
Pentode
1939
Ct8
CV2911

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DL33
Pentode
1946
IO
3Q5GT CV819 N16

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DL35
Beam Tetrode
1946
IO
1C5G 1C5GT CV1803 N14

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DL37
Pentode

CV2299

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DL620
Pentode

B5A
CV2238 XFY14

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DL63
Double Diode Triode
1939
IO
6R7G CV2912 DH147 OM4

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DL64
Pentode

B5A
CV2331

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DL66
Pentode

B5A
CV2106 CV2288

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DL67
Pentode
1950

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DL68
Pentode

B5A
3B4 CV2240

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DL69
Pentode

CV2361

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DL70
Pentode

B8D & B8D/F
CV2105

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DL71
Pentode

B8D & B8D/F
CK502AX CV385

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DL72
Pentode

B8D & B8D/F
CK506 CV387

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DL73
Pentode
1957
B8D & B8D/F
CV2299 VX8092

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DL74M
Pentode
1940

12Q7GT DH76

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DL75
Pentode

B8D & B8D/F

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DL82
Double Diode Triode
1947
B8B
7B6 DH81

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DL91
Pentode
1948

1S4 CV783

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DL92
Pentode
1947
B7G
1P10 2P2 3S4 CV820 CV2370 N17 VT-174

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DL93
Pentode
1950

3A4 CV807 CV2390 E1485

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DL94
Pentode
1950
B7G
1P11 3V4 CV2983 N19

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DL95
Pentode
1950

3Q4 CV818 N18

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DL96
Pentode
1953
B7G
1P1 3C4 N25

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DL98
Pentode
1957

3B4 CV2259

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DLS1
Thermal Delay Switch

CV2913

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DLS10
Thermal Delay Switch

B4
AD1 CV190 CV1314

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DLS15
Thermal Delay Switch
1949
B4

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DLS16
Thermal Delay Switch
1949
IO

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DLS19
Thermal Delay Switch
1946

CV342 SH342 VLS631

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DM160
Fluorescent Column
1957
CV5412

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DM70
Tuning Indicator
1952
B8D & B8D/F
1M1 1M3 CV2980 Y25

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DM71
Tuning Indicator
1952
1M1 1M3 Y25

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DN143
Double Diode Pentode
1947
B8B
EBL21

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DN41
Double Diode Pentode
1935

AC2/Pen/DD DDPP4B PT4D

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DO24
Triode
1931
B4
CV1040 NR47 P27-500 PP5/400 PX25 VR40

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DO25
Triode
1930
B4

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DO26
Triode
1933

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DO30
Triode
1937

CV1178 CV563 DA30 NR56

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DO60
Triode
1930

BS60 CV1206 DA60

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DP-Pen
Pentode
1933
B7

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DP4-1
Cathode-Ray Tube
1953

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DP61
Pentode

6AK5 EF95 PM05

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DPT
Pentode
1931

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DR2000
Indicator
1968

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

Dry-Battery
Triode
1922

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DS103

CV94

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DS310
Triode

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DS311
Triode

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DS320
Triode

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DT215
Double Diode Triode
1936
B5

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DT41
Double Diode Triode
1937
B7
TDD4

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DU1
Rectifier HW
1930

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DU10
Rectifier HW
1929
B4

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DU15
Rectifier HW
1930

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DU2
Rectifier FW
1928
DU/2

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DU3
Rectifier HW
1930

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DU4
Rectifier HW
1930

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DU5
Rectifier FW
1926

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DV-2
Triode

UV

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DV-3
Triode
1925
UV

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DV-5
Triode
1925

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DV55
Heil Tube

CV230 V230C/1D

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DW1
Rectifier FW
1930

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DW15
Rectifier FW
1929

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DW2
Rectifier FW
1930
B4
1821 500BU CV1443 R1 UU5

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DW2X
Rectifier FW

1821 500BU CV1443 R1 UU5

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DW3
Rectifier FW
1931
B4
DW4/350 R2

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DW30
Rectifier FW
1929
B4

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DW4
Rectifier FW
1931

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DW4/350
Rectifier FW
1936
B4
1561 442BU 460BU BVA216 CV1796 DW3 DW4-350 R2 R3 R4 R42 RV120/350 U12/14 UU120/350 UU5

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DW4/500
Rectifier FW
1939

1561 460BU AU4 CV1064 DW4-500 NU3 R3 R4 RV120/500 S11D U12/14 UU5 VU64

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DW5
Rectifier HW

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DW6
Rectifier FW
1931

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DW7
Rectifier HW

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DW7X
Rectifier HW

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DW8
Rectifier FW
1930

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DY51
Rectifier HW
1965

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DY70
Rectifier HW

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DY802
Rectifier HW
1965
B9A

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DY86
Rectifier EHT
1955
B9A
1S2 1S2A DY87

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DY86/87
Rectifier EHT
1955
B9A
152A 1S2 1S2A DY86

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DY87
Rectifier EHT
1955
B9A
152A 1S2 1S2A DY86

Type
Structure
Date
Base
PDF
Sensibly equivalent^¶ to:

DeForest
Triode

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