34 nüvi 610/660 Owner’s ManualU SING THE FM TRANSMITTERFM Transmitter TipsThe FM transmitter is intended to transmit your nüvi’s audio to your FM stereo.Do not adjust your FM settings while you are driving your vehicle.When searching for an appropriate FM frequency on your FM stereo, look for anunused frequency that has steady, consistent static. If you hear slight noises andsounds in the background of the static, choose a different frequency.As you travel, you might need to change the frequency for the FM transmitter.A frequency not used by a radio station in your area might be used by a stationelsewhere.As you drive, you may notice changes in the background static even though thereis no FM station using that channel. You may notice this as you drive throughintersections where certain kinds of traffic lights or other municipal electronicsystems are operating. You might also notice this effect when the terrain changes,allowing distant stations to be received by your car stereo that were not receivedwhen you made your initial frequency selection. These and other sources of electricalinterference may make it necessary to look for another frequency.The distance between the 12-Volt adapter, the nüvi, and the FM stereo antenna mayalso affect the noise level. Vehicles with antennas located far away, such as a rear-mounted antenna, may experience more interference from outside noise sources thanvehicles with front-mounted antennas.