 However the new mode doubles the bandwidth from about 1 MHz to about 2 MHz which makes for more interferences on the edge regions.The partitioning of the ISM frequency band has not changed being still 40 channels spaced at a distance of 2 MHz.This is an essential differences over Bluetooth 2 EDR which did also double the data rate but it is doing that by employing a π/4-DQPSK or 8-DPSK phase modulation on a 1 MhZ channel while Bluetooth 5 continues to use just frequency shift keying.