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 Service Manual: Neutral Switch Description and operation
Description • Signal of neutral switch is transmitted to the ECM in the neutral state. • This signal is blocked when gear changed. • When the signal is blocked, The ECM controls the fuel injection ...

Kia Cee'd Owners Manual: Pre-tensioner seat belt
Your vehicle is equipped with driver's and front passenger's pre-tensioner seat belts. The purpose of the pre-tensioner is to make sure that the seat belts fit tightly against the occupant's body in certain frontal collisions. The pre-tensioner seat belts may be activated in crashes wh ...

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