Wireless communications | Mobile Network, Radio Signals
https://www.britannica.com/technology/wireless-communications
web4 days ago · Wireless communications, System using radio-frequency, infrared, microwave, or other types of electromagnetic or acoustic waves in place of wires, cables, or fibre optics to transmit signals or data. Wireless devices include cell phones, two-way radios, remote garage-door openers, television remote.
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