connect both the existing FM antenna and DAB antenna to the device inputs, then the FM-modulated DAB radio is readily available via its FM output (F female connector on the other end of device). This paragraph is intended to guide you step by step how to correctly configure this device with existing FM antenna, power source, and audio output delivery to car stereo. 2.1 Connecting to the inputs Connect the existing FM/AM antenna (available from the car) to the port (a) of the unit.