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| electron Tube Data sheets |
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| Precision 660 |
The Precision 660 tube tester with my DIY socket adapter
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| Circuit diagram |
| Circuit diagram tubes part only |
| G140 adapter |
| Coletronics Flyer |
| Test Data : |
| Tube-list in excel (updated 2023-11-26) |
| H2B Rolchart |
| TRC HB |
| TRC 63-10 |
| TRC 65-08-15 |
| TRC 65-10-01 |
| TRC 65-10-25 |
| TRC 66-04-01 |
| TRC 66-06-25 |
| TRC 67-08-09 |
| TRC 68-10-01 |
| TRC 69-04-01 |
| TRC 70-02-01 |
| TRC 70-06-01 |
| TRC 70-11-01 |
| TRC 71-02-15 |
| TRC 71-06-01 |
| TRC 76-01-01 |
| Form 660 TDC (9-59) transistor test data |