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<blockquote data-quote="aviscomi" data-source="post: 3264" data-attributes="member: 34"><p>WIKIPEDIA:</p><p></p><p>Bluetooth operates at frequencies between 2402 and 2480 MHz, or 2400 and 2483.5 MHz including <a href="https://en.wikipedia.org/wiki/Guard_band" target="_blank">guard bands</a> 2 MHz wide at the bottom end and 3.5 MHz wide at the top.<a href="https://en.wikipedia.org/wiki/Bluetooth#cite_note-Radio-Electronics.com-15" target="_blank">[15]</a> This is in the globally unlicensed (but not unregulated) Industrial, Scientific and Medical (<a href="https://en.wikipedia.org/wiki/ISM_band" target="_blank">ISM</a>) <strong>2.4 GHz short-range radio frequency band</strong>. Bluetooth uses a radio technology called <a href="https://en.wikipedia.org/wiki/Frequency-hopping_spread_spectrum" target="_blank">frequency-hopping spread spectrum</a>. Bluetooth divides transmitted data into packets, and transmits each packet on one of 79 designated Bluetooth channels. Each channel has a bandwidth of 1 MHz. It usually performs 800 hops per second, with <a href="https://en.wikipedia.org/wiki/Adaptive_frequency-hopping_spread_spectrum" target="_blank">Adaptive Frequency-Hopping</a> (AFH) enabled.<a href="https://en.wikipedia.org/wiki/Bluetooth#cite_note-Radio-Electronics.com-15" target="_blank">[15]</a> <a href="https://en.wikipedia.org/wiki/Bluetooth_low_energy" target="_blank">Bluetooth low energy</a> uses 2 MHz spacing, which accommodates 40 channels.</p></blockquote><p></p>
[QUOTE="aviscomi, post: 3264, member: 34"] WIKIPEDIA: Bluetooth operates at frequencies between 2402 and 2480 MHz, or 2400 and 2483.5 MHz including [URL='https://en.wikipedia.org/wiki/Guard_band']guard bands[/URL] 2 MHz wide at the bottom end and 3.5 MHz wide at the top.[URL='https://en.wikipedia.org/wiki/Bluetooth#cite_note-Radio-Electronics.com-15'][15][/URL] This is in the globally unlicensed (but not unregulated) Industrial, Scientific and Medical ([URL='https://en.wikipedia.org/wiki/ISM_band']ISM[/URL]) [B]2.4 GHz short-range radio frequency band[/B]. Bluetooth uses a radio technology called [URL='https://en.wikipedia.org/wiki/Frequency-hopping_spread_spectrum']frequency-hopping spread spectrum[/URL]. Bluetooth divides transmitted data into packets, and transmits each packet on one of 79 designated Bluetooth channels. Each channel has a bandwidth of 1 MHz. It usually performs 800 hops per second, with [URL='https://en.wikipedia.org/wiki/Adaptive_frequency-hopping_spread_spectrum']Adaptive Frequency-Hopping[/URL] (AFH) enabled.[URL='https://en.wikipedia.org/wiki/Bluetooth#cite_note-Radio-Electronics.com-15'][15][/URL] [URL='https://en.wikipedia.org/wiki/Bluetooth_low_energy']Bluetooth low energy[/URL] uses 2 MHz spacing, which accommodates 40 channels. [/QUOTE]
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