| 
| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| G |  |   |   | 
 |   | 
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| 
| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| G1/235G | Gas Filled Relay |   |   | 
 |   | 
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| 
| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
|  | Gas Filled Relay |  |  | 
 |  | 
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| 
| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| G1/237G | Gas Filled Relay |   |   | 
 | G1/235G XC18 | 
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| 
| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| G1/370K | Gas Filled Relay |   |   | 
 |   | 
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| 
| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| G1/371G | Gas Filled Relay |   |   | 
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| 
| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
|  | Gas Filled Relay |  |  | 
 |  | 
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| 
| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
|  | Geiger-Muller Tube |   |  | 
 |   | 
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| 
| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| G12 | Photocell |   |   | 
 | CE4 GS116AM R58A | 
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| 
| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| G125 |  |  |   | 
 |   | 
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|  | 
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| 
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| 
| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| G15F | Photocell |   |   | 
 |   | 
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| 
| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| G16 | Photocell |   |   | 
 |   | 
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| 
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| 
| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| G210 | Triode |   |   | 
 |   | 
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| 
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| 
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| 
| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| G3412 | Rectifier HW x 2 | 1934 | B7 | 
 |   | 
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| 
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| 
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| 
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| 
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| 
| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| G5 | Photocell |   |   | 
 | GS16WB | 
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| 
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| 
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| 
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| 
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| 
| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| G8 | Photocell |   |   | 
 | 3554 4GSM 50CG 868 CE1 CMG32 G8 GS146 NU.1 PJ23 R59A WL735 | 
 | 
| 
| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| GA16 | Photocell |   | B4 | 
 |   | 
 | 
| 
| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| GA50 | Photocell |   |   | 
 | 90AG CAG29 | 
 | 
| 
| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| Gas-Tube | X-Ray Tube | 1920 |  | 
 |   | 
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| 
| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| GC10/2P | Counting Tube |   | B7G | 
 | CV8282 | 
 | 
| 
 | 
| 
| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| GC10/4B/L | Counting Tube |   |   | 
 | CV6100 | 
 | 
| 
| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| GC10B | Counting Tube |   | IO | 
 | CV2271 GC10B/S | 
 | 
| 
| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| GC10B/L | Counting Tube (Long Life) |   |  | 
 | CV6044 | 
 | 
| 
| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| GC10D | Counting Tube |   | IO | 
 |   | 
 | 
| 
| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| GC16 | Photocell |   |   | 
 |   | 
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| 
| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| GC860 | Pentode |   |   | 
 | VT17 | 
 | 
| 
| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| GD10 | Cold Cathode |   |  | 
 |   | 
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| 
| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| GET2 | Neon Indicator |   |   | 
 | CV743 | 
 | 
| 
| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| GET41/2 | Neon Indicator |   |   | 
 | CV744 | 
 | 
| 
| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| GEX54/3 |   |   |   | 
 | CV166 | 
 | 
| 
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| 
| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| GI-7B | Triode |   |  | 
 |   | 
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| 
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| 
| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| GK20 | Thyratron |   |   | 
 |   | 
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| 
| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| GK3 | Thyratron |   |   | 
 |   | 
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| 
| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| GL446 | Triode |   |   | 
 | 446 CV3725 | 
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| 
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| 
| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| GL464 | Triode |   |   | 
 | CV3604 | 
 | 
| 
| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| GL464B | Triode |   |   | 
 | 464B CV3605 | 
 | 
| 
| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| GL522 | Triode |   |  | 
 |   | 
 | 
| 
| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| GL5556/PJ8 | Triode |   |   | 
 | 5556 | 
 | 
| 
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| 
| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| GL5J29 | Magnetron | 1946 |   | 
 | CV3606 CV3842 | 
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| 
| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| GL917 | Photocell |   |   | 
 | 917 CE11V GL917 NU11V R59TAV VS118TA | 
 | 
| 
| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| GL918 | Photocell | 1945 |   | 
 | CV2692 | 
 | 
| 
| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| GL920 | Photocell |   |   | 
 | 920 GL920 GS149 | 
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| 
| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| GL927 | Photocell |   |   | 
 | 3530 927 CE25 CMG34X GS47X | 
 | 
| 
| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| GL929 | Photocell |   |   | 
 | 929 GL929 VA16SO | 
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| 
| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| GL930 | Photocell |   |   | 
 | 930 CE30 GS16SO NU30 R61A R64A | 
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| 
| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| GLOW-SWITCH | Cold Cathode |   |  | 
 |   | 
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| 
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| 
| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| GN-1 | Numerical Indicator |   |  | 
 |   | 
 | 
| 
| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| GN-4A | Numerical Indicator |   |  | 
 | ZM1022 | 
 | 
| 
| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| GN-4D | Numerical Indicator |   |  | 
 |   | 
 | 
| 
| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| GN-4P | Numerical Indicator |   |  | 
 |   | 
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| 
| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| GN-5A | Numerical Indicator |   |  | 
 | CV5351 | 
 | 
| 
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| 
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| 
| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| GNP-7 | Nixie Tube |   |  | 
 |   | 
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| 
| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| GNP-7AH | Nixie Tube |   |  | 
 |   | 
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| 
| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| GP | Triode | 1925 |   | 
 |   | 
 | 
| 
 | 
| 
| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| GP210 | Triode | 1928 |   | 
 |   | 
 | 
| 
| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| GP407 | Triode | 1928 |   | 
 |   | 
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| 
| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| GP4VBE | Triode | 1925 |   | 
 |   | 
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| 
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| 
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| 
| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| GPE120T | Cold Cathode |   | B9A | 
 |   | 
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| 
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| 
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| 
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| 
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| 
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| 
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| 
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| 
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| 
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| 
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| 
| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| GS-16A | Indicator |   |  | 
 |   | 
 | 
| 
 | 
| 
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| 
 | 
| 
| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| GS116A | Photocell |   |   | 
 | NU4 | 
 | 
| 
| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| GS116AM | Photocell |   |   | 
 | CE4 G12 R58A | 
 | 
| 
| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| GS117A | Photocell |   |   | 
 | 4GC 814A CE2 NU2 R71A WL737 | 
 | 
| 
| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| GS117ATA | Photocell |   |   | 
 | CE13 NU13 R71TA | 
 | 
| 
| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| GS118TA | Photocell |   |   | 
 | CE11 R59TA | 
 | 
| 
| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| GS126A | Photocell |   |   | 
 | CE7 | 
 | 
| 
 | 
| 
| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| GS146 | Photocell |   |   | 
 | 3554 4GSM 50CG 868 CE1 CMG32 G8 GS146 NU.1 PJ23 R59A WL735 | 
 | 
| 
| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| GS149 | Photocell |   |   | 
 | 920 GL920 GS149 | 
 | 
| 
 | 
| 
| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| GS16SO | Photocell |   |   | 
 | 930 CE30 GL930 NU30 R61A R64A | 
 | 
| 
| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| GS16WB | Photocell |   |   | 
 | G5 | 
 | 
| 
| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| GS17 | Photocell |   |   | 
 | 3533 CMG17 | 
 | 
| 
 | 
| 
| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| GS23 | Photocell |   |   | 
 | 921 | 
 | 
| 
| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| GS26 | Photocell |   | B4 | 
 | CV1432 | 
 | 
| 
| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| GS26T | Photocell |   |   | 
 | CMG8 | 
 | 
| 
| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| GS34 | Photocell |   |  | 
 |   | 
 | 
| 
| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| GS44 | Photocell |   |   | 
 | CMG33 | 
 | 
| 
| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| GS44X | Photocell |   |   | 
 |   | 
 | 
| 
| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| GS44Y | Photocell |   |   | 
 | CE36 NU36 | 
 | 
| 
| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| GS46 | Photocell |   |  | 
 |   | 
 | 
| 
| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| GS47 | Photocell |   |   | 
 | GS47 | 
 | 
| 
| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| GS47X | Photocell |   |   | 
 | 3530 927 CE25 CMG34X GL927 | 
 | 
| 
| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| GS49 | Photocell |   |   | 
 | CMG28 | 
 | 
| 
| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| GS50 | Photocell |   |   | 
 | 90CG CMG29 | 
 | 
| 
| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| GS56 | Photocell |   |   | 
 | PE7B | 
 | 
| 
 | 
| 
| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| GT1 | Thyratron |   |   | 
 | CV2969 | 
 | 
| 
 | 
| 
 | 
| 
 | 
| 
| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| GT25E | Triode |   |  | 
 |   | 
 | 
| 
 | 
| 
| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| GT411 | Thermocouple Vacuum Guage |   | IO | 
 |   | 
 | 
| 
| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| GTE120Y | Trigger Tube |   |  | 
 |   | 
 | 
| 
 | 
| 
| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| GTE175M | Trigger Tube | 1964 | B7G | 
 |   | 
 | 
| 
 | 
| 
 | 
| 
 | 
| 
 | 
| 
 | 
| 
| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| GU12 | Rectifier HW |   |   | 
 | 1000G 24/400A 2H/66 2V/400A 2XM/600A 357B 4017 866A 866 966 AG866A AH201 CV32 DCG4 DQ2 ESU866 RG3-250A TH5021B UE966 VE966A VH550A WL866A WT-210.0008 WT262 | 
 | 
| 
| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| GU19 | Double Beam Tetrode |   |  | 
 |   | 
 | 
| 
 | 
| 
| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| GU21 | Rectifier HW | 1954 |   | 
 | AH221 CV5 CV152 ESU200 RG4-1250 | 
 | 
| 
 | 
| 
| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| GU4GT | Rectifier FW |   |   | 
 | CV841 | 
 | 
| 
 | 
| 
 | 
| 
 | 
| 
| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| GX432 | Noise Tube |   |  | 
 | CV10504 | 
 | 
| 
| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| GXA80 | Spark Gap |   |   | 
 | CV402 | 
 | 
| 
 | 
| 
| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| GXU2 | Rectifier HW | 1956 |   | 
 | 2G/472B 4B32 4H/32 AX230 CV2518 DCX4/5000 RR3-1250 | 
 | 
| 
 | 
| 
 | 
| 
| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| GXU5 | Rectifier HW |   |   | 
 |   | 
 | 
| 
| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| GXU50 | Rectifier HW |   |   | 
 |   | 
 | 
| 
 | 
| 
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