2005 Chrysler Pacifica Owner's Manual - Page 220

220 UNDERSTANDING YOUR INSTRUMENT PANEL Electrical Disturbances Radio waves may pick up electrical disturbances during transmission. They mainly affect the wave amplitude, and thus remain a part of the AM reception. They interfere very little with the frequency variations that carry the FM signal. AM Reception AM sound is based on wave amplitude, so AM reception can be disrupted by such things as lightning, power lines and neon signs. FM Reception Because FM transmission is based on frequency variations, interference that consists of amplitude variations can be filtered out, leaving the reception relatively clear, which is the major feature of FM radio. NOTE: On vehicles so equipped the radio, steering wheel radio controls and 6 disc CD/DVD changer will remain active for up to 45 seconds after the ignition switch has been turned off. Opening a vehicle front door will cancel this feature. CASSETTE TAPE AND PLAYER MAINTENANCE To keep the cassette tapes and player in good condition, take the following precautions: 1. Do not use cassette tapes longer than C-90; otherwise, sound quality and tape durability will be greatly diminished. 2. Keep the cassette tape in its case to protect from slackness and dust when it is not in use. 3. Keep the cassette tape away from direct sunlight, heat and magnetic fields such as the radio speakers. 4. Before inserting a tape, make sure that the label is adhering flat to the cassette.