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- The excursion of a radio wave from the Earth to the ionosphere and back to the Earth. Note: The number of hops is synonymous with 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. 4. An intermediate network connection consisting of a leg from one router to another router and over which a packet travels to reach its destination. Note: Hops can be traced using ping or other trace utilities.
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- adaptive differential pulse-code modulation (ADPCM), carrier (cxr), chirping, Di Group, digital modulation, multipulse test signal, pulse-amplitude modulation (PAM), pulse carrier, pulse-duration modulation (PDM), pulse-frequency modulation (PFM), pulse-interval modulation, pulse-length modulation, pulse link repeater (PLR), pulse-position modulation (PPM), pulse-repetition-rate modulation, pulse-time modulation (PTM), pulse-width modulation (PWM), pulsed FM systems, sub-band adaptive differential pulse code modulation (SB-ADPCM)