![]() ![]() In Classic Bluetooth, which is also referred to as basic rate (BR) mode, the modulation is Gaussian frequency-shift keying (GFSK). This is in the globally unlicensed Industrial, Scientific and Medical ( ISM) 2.4 GHz short-range radio frequency band. The Bluetooth logo is a bind rune merging the Younger Futhark runes File:H-rune.gif ( Hagall) and File:Runic letter berkanan.svg ( Bjarkan), Harald's initials.īluetooth uses a radio technology called frequency-hopping spread spectrum, which chops up the data being sent and transmits chunks of it on up to 79 bands of 1 MHz width in the range 2402-2480 MHz. The implication is that Bluetooth does the same with communications protocols, uniting them into one universal standard. The word Bluetooth is an anglicised version of Danish Blåtand, the epithet of the tenth-century king Harald I of Denmark and parts of Norway who united dissonant Danish tribes into a single kingdom. 10 Bluetooth Innovation World Cup marketing initiative. ![]()
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