toyota Workshop Repair Guides

Toyota Workshop Service and Repair Manuals

Radio/Stereo|Testing and Inspection > < Diagram Information and Instructions|Page 5850
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transmitter antenna bounces off buildings and mountains and interferes with the signal that is received directly.

Fade Out

Because FM radio waves are of higher frequencies than AM radio waves, they bounce off buildings, mountains, and other obstructions. For this reason.
FM signals often seem to gradually disappear or fade away as the vehicle goes behind a building or other obstruction. This is called "fade out".

Radio/Stereo|Testing and Inspection > < Diagram Information and Instructions|Page 5850