The radio-frequency (RF)spectrum is part of the electromagnetic spectrum of radiation; it carries most communications signals.
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Q76: One wired communications standard that allows users
Q77: The computer that acts like a disk
Q78: The backbone is the main communications route
Q79: A cable that is made up of
Q80: Routers join multiple wired and / or
Q82: Cellphones are basically two-way radios.
Q83: Satellite orbits are at three levels: GEO,MEO,and
Q84: Both digital narrowband and broadband transmission speeds
Q85: Analog cellphones were 1G phones.
Q86: Satellite transmission uses in-orbit satellites and earth
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