Bluetooth Radio
n frequency hopping in 79 hops displaced by 1 MHz, starting
at 2.402 GHz and stopping at 2.480 GHz
to function on a worldwide basis, Bluetooth requires a radio
frequency that is license-free and open to any radio
2.45 GHz ISM band satisfies these requirements, although it must
cope with interference from baby monitors, garage door openers,
cordless phones and microwave ovens, which also use this
frequency.
n due to local regulations the bandwidth is reduced in Japan,
France and Spain. This is handled by an internal software
switch
n the maximum frequency hopping rate is 1600 hops/s.