Air traffic control uses primary and secondary radars . Primary radars are a “classical” radar which reflects all kind of echoes, including aircraft and clouds. Secondary radar emits pulses and listens for special answer of digital data emitted by an Aircraft Transponder as an answer.
Read moreWhat are the two radio frequency bands?
WiFi frequency bands are frequency ranges within the wireless spectrum that are designated to carry WiFi: 2.4 GHz and 5 GHz . This article by TechTarget dives a bit deeper regarding what frequency bands are.
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