An on-vehicle radio receiving device controls the timing of searching for channel reception levels by switching among plural channels. The on-vehicle radio receiving device has a search control function for causing a radio circuit to successively search for reception levels of plural channels, and a data reception control function for causing the radio circuit to receive data by radio over one of the plural channels based on the reception level of each channel as a result of the search. It increases the operation frequency of the search control function as a travel speed of the vehicle increases, and decreases the operation frequency of the search control function as the travel speed of the vehicle decreases.

 
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