Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
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Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
OA2403 | | | | 
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Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
OC2 | Octode | | B7 | 
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Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
OP42 | Pentode | 1937 | | 
| Pen4B |
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Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
ORP11 | Photocell | 1959 | | 
| 7633 |
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Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
ORP52 | Photocell | 1959 | | 
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Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
ORP60 | Photocell | 1959 | | 
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Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
ORP90 | Photocell | 1958 | | 
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Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
Orpheus MP2 | AF Triode | 1926 | | 
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Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
OS41/1250 | Pentode | 1947 | | 
| 804 CV624 |
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Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
Osglim | Neon Tube Range (Trade Name) | | | 
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Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
OTK-4 | Triode | | | 
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Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
OTK17 | | | | 
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Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
OZ4 | Rectifier FW | | | 
| CV692 |
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Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
OZ4A | Rectifier FW | | | 
| CV517 |
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