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Hop

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In telecommunication, the term hop has the following meanings:

1. The excursion of a radio wave from the Earth to the ionosphere and back to the Earth.

Note: The number of hops indicates the number of reflections from the ionosphere.

2. A waveform transmitted for the duration of each relocation of the carrier frequency of a frequency-hopped system.

3. To modify a modulated waveform with constant center frequency so that it frequency hops.

Source: from Federal Standard 1037C and from MIL-STD-188

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