The application discloses a radio transmission device for receiving/transmitting of radio packets, comprising: a reception means (34) connected to a mixing means (4) via a transmit/receive switch (32) and an amplifying means (30), said mixing means (4) being connected via a demodulation means (12) to a base band processing means (20), wherein said base band processing means (20) is connected via a modulation means (28) to a power amplifying means (42), wherein said modulation means (28) is releasably connected via a phase locked loop circuit (15) to said mixing means (4).