Bluetooth Frequency Allocations/Frequency Bands
Bluetooth operates at 2.4 GHz ISM band. Following table defines buletooth frequencies used across the world. As mentioned bandwidth is sufficient to define 79 channels (in US,Europe and other countries) having 1 MHz bandwidth in each channel. Japan,Spain and France uses 23 bluetooth channels. Following table mentions bluetooth frequency allocations.
|Region||Frequency range||RF Channels|
|US,Europe and rest of the World||2.4 to 2.4835 GHz||f=2.402 + n, MHz (n = 0 to 78)|
|Japan||2.471 to 2.497 GHz||f = 2.473 + n, MHz (n = 0 to 22)|
|Spain||2.445 to 2.475 GHz||f = 2.449 + n, MHz (n = 0 to 22)|
|France||2.4465 to 2.4835 GHz||f = 2.454 + n , MHz (n = 0 to 22)|