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CE000382 Communications
- Between telephone exchanges, large numbers of calls must be transferred over moderate distances. ... (such as between major cities) require signal boosting ...
Between telephone exchanges, large numbers of calls must be transferred over moderate distances. ... (such as between major cities) require signal boosting ...
| PowerPoint PPT presentation | free to view
CE000382 Communications
- ... the satellite, and then retransmitted via downlink to another earth station. ... 1840 Morse code and improved telegraph. 1876 Telephone patent ...
... the satellite, and then retransmitted via downlink to another earth station. ... 1840 Morse code and improved telegraph. 1876 Telephone patent ...
| PowerPoint PPT presentation | free to view
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