| Name | Last modified | Size | Description |
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| Parent Directory | | - |
| Telex Information.pdf | 03-Dec-2015 11:10 | 706K |
| Telegraphy and Telephony Historical Information.pdf | 03-Dec-2015 11:10 | 120K |
| Telecom Design Tricks.pdf | 03-Dec-2015 11:11 | 432K |
| Calculagraph No33 Manual.pdf | 03-Dec-2015 11:10 | 331K |
| Cable TE and Loop Resistance.pdf | 03-Dec-2015 11:10 | 30K |
| Cable Simulator.pdf | 03-Dec-2015 11:11 | 374K |
| BPO TELS Auto B5126.pdf | 03-Dec-2015 11:10 | 1.2M |
| BPO TELS Auto B5125.pdf | 03-Dec-2015 11:10 | 815K |
| BPO 3000 Type Relay Data Yellow Book.pdf | 03-Dec-2015 11:13 | 3.0M |
| BPO 3000 Type Relay Data Introduction.pdf | 03-Dec-2015 11:10 | 79K |
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