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: Repair procedures
Inspection [System Inspection] 1. Disconnect the vapor hose from the throttle body and connect a vacuum pump to the nipple on the throttle body. 2. Check the following points with applied vacuum using a vacuum pump. ...

Kia Cee'd JD Service Manual: Evaporator Core Repair procedures
Replacement 1. Disconnect the negative (-) battery terminal. 2. Remove the heater & blower assembly. (Refer to Heater - "Heater Unit") 3. Separate the blower unit from the heater un ...

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