| electron Tube Data sheets | 
       
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     | RCA HB3 collected by Adri de Keijzer † | 
| (up)date | item | size | 
| 2025-10-05 | 0-1 Index of Tube Types | 193,761 bytes | 
| 2025-10-05 | 0-2 Readme | 66,051 bytes | 
| 2025-10-05 | 1 General Section | html page | 
| 2025-10-05 | 2 Cathode-Ray, Monoscope, Storage Tubes | html page | 
| 2025-10-05 | 3 Photosensitive Devices | html page | 
| 2025-10-05 | 4 Thyratron, Ignitron, Glow-Discharge Devices | html page | 
| 2025-10-05 | 5 Miscellaneous Devices | html page | 
| 2025-10-05 | 6 Receiving Tubes | html page | 
| 2025-10-05 | 7 Transmitting Tubes | html page |