| electron Tube Data sheets | 
       
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     | Machlett documents | 
| (up)date | item | size | 
| 2020-03-20 | Some correspondence, 6 pages. | 1,554,842 bytes | 
| 2020-03-20 | Electron Tubes, 38 pages. | 18,593,969 bytes | 
| 2020-03-20 | Electron Tubes - Quick Reference Guide, 32 pages. | 10,944,255 bytes | 
| 2020-03-20 | Special Purpose Vidicons, 8pages. | 3,014,727 bytes | 
| 2020-03-20 | UHF Planar Triodes, 92 pages. | 46,588,224 bytes |