Kia Cee'd: How Vehicle Audio Works / AM (MW, LW) reception

AM broadcasts can be received at greater distances than FM broadcasts. This is because AM radio waves are transmitted at low frequencies. These long, low frequency radio waves can follow the curvature of the earth rather than travelling straight out into the atmosphere. In addition, they curve around obstructions so that they can provide better signal coverage.

FM reception
AM and FM radio signals are broadcast from transmitter towers located around your city. They are intercepted by the radio antenna on your vehicle. This signal is then received by the radio ...

FM radio station
FM broadcasts are transmitted at high frequencies and do not bend to follow the earth's surface. Because of this, FM broadcasts generally begin to fade at short distances from the station. ...

Other information:

Kia Cee'd JD Service Manual: Multimedia Jack Schematic diagrams
Circuit Diagram   No Terminal Description Condition Specified Condition 1 USB /iPod power USB/iPod device is inserted 4.9V ~ 5.1V 2 USB D- ...

Kia Cee'd JD Owners Manual: Non-operating condition
Never use the Smart Parking Assist System in the below conditions. Curved parking space Inclined roads A vehicle loaded with longer or wider cargo compared to the vehicle Diagonal parking space Parking space with trash, grass or barriers Heavy snow or rain A pole close to the pa ...

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