Safety warnings 11English This device must only be used with authorized accessoriesand antennas. The operator must ensure that the minimum safe distanceof 0.9m (35 inches) between persons and the antenna ismaintained during transmissions. This minimum safe distance is based on the assumptionthat there is a duty cycle of 50% transmit mode to stand-by or receive modes. The radio is in transmit mode whenthe PTT (press-to-talk) key on the microphone is pressedand the control head red LED (light emittingdiode) glows.Please refer to the following website for more information onwhat RF energy is and how to control your exposure toassure compliance with established RF exposure limits.Website: http://www.fcc.gov/oet/rfsafety/rf-faqs.html.Radio protectionAlways remove the fuses from the radio power cable beforecharging the vehicle battery, connecting a second battery orusing power from another vehicle (e.g. when“jump-starting” the vehicle).