and a second modulation block 12 including a u03c0 4 dqpsk lookup table both modulation blocks 11 12 have an input to which binary data can be fed the second modulation block 12 has an additional input for a control signal the output of both modulation blocks 11 12 is connected to a modulation switch 13 the modulation switch 13 is further connected to a digital to analogue converter dac 14 the output of the dac 14 forms the output of the modulator and is connected to radio transmitting means of a bluetooth u2122 device which are not depicted in the figure the bluetooth u2122 device with the depicted modulator is presently supposed to be employed as master in a piconet comprising as well other equivalent devices as current bluetooth u2122 devices binary data that is to be transmitted by the device is forwarded to both modulation blocks 11 12 in the first modulation block 11 the input bits are modulated with a conventional 2 gfsk modulation scheme including a mapping based on the provided 2 gfsk lookup table the mapping is carried out according to the requirements in the current bluetooth u2122 specification each bit is mapped separately and equally for an entire packet the modulation in the first modulation block 11 enables transmissions with a gross medium data rate of 1 mbit s and is carried out for communications with current bluetooth u2122.