The device has a transmitting/receiving unit (15) with a controller (20), a transmitter (21) and a receiver (22) connected to an antenna (14) for transmitting/receiving data frames (D1, D2) to/from another transmitting/receiving device (12), respectively. A control unit (16) controls the unit (15), and instructs the unit (15) to transmit a frame and to receive another frame from the unit (15). The controller evaluates the latter frame after transmission of the former frame and determines whether the latter frame contains an acknowledgment message for a successful receipt of the former frame.