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Spread-spectrum clocks are signal-generating techniques that modulate a specific spectrum of electromagnetic energy in such a manner as to broaden the frequency of the signal spectrum. The...
Digital Selective Calling (DSC) radios use satellite technology to allow recreational boaters to make ship-to-ship telephone calls. A separate distress channel is also available and is accessible...
Satellite radio took several years to develop and continues to be redefined and improved. Initially, engineers had to surmise how to beam satellite radio signals all the way from space, using a...
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