Black plate (19,1)Cadillac SRX Owner Manual - 2011Infotainment System 7-19Radio ReceptionFrequency interference and staticcan occur during normal radioreception if items such as cell phonechargers, vehicle convenienceaccessories, and external electronicdevices are plugged into theaccessory power outlet. If there isinterference or static, unplug theitem from the accessory poweroutlet.FMFM signals only reach about 16 to65 km (10 to 40 miles). Although theradio has a built-in electronic circuitthat automatically works to reduceinterference, some static can occur,especially around tall buildings orhills, causing the sound to fade inand out.AMThe range for most AM stations isgreater than for FM, especially atnight. The longer range can causestation frequencies to interfere witheach other. Static can occur whenthings like storms and power linesinterfere with radio reception. Whenthis happens, try reducing the trebleon the radio.XM™ Satellite Radio ServiceXM Satellite Radio Service givesdigital radio reception from coastto coast in the 48 contiguousUnited States, and in Canada.Just as with FM, tall buildings orhills can interfere with satellite radiosignals, causing the sound to fadein and out. In addition, travelingor standing under heavy foliage,bridges, garages, or tunnels maycause loss of the XM signal for aperiod of time.Cellular Phone UsageCellular phone usage can causeinterference with the vehicle's radio.Multi-Band AntennaThe multi-band antenna is on theroof of the vehicle. The antennais used for the AM/FM radio,OnStar, the XM Satellite RadioService System, and GPS (GlobalPositioning System), if the vehiclehas these features. Keep theantenna clear of obstructionsfor clear reception.