Patent ID: 8903020

Claim:
A radio signal receiving system for retrieving a radio signal and converting the radio signal retrieved into a signal to be provided to a transceiver, comprising: a signal retrieving module, comprising: a first signal retrieving portion retrieving the radio signal through a conducting wire in an electrical outlet and comprising a power plug, a power insulation conversion circuit, and a resonant circuit, the power plug being inserted into the electrical outlet, the power insulation conversion circuit being electrically connected to the power plug and adapted to convert power from the electrical outlet into a direct current signal, and the resonant circuit being electrically connected to the power insulation conversion circuit and adapted to identify a resonance frequency of the radio signal in the direct current signal; a second signal retrieving portion retrieving the radio signal through a metallic vehicular casing and comprising a magnet and a coil, the magnet being attached to the metallic vehicular casing by magnetic attraction, and the coil winding around the magnet, capable of current induction, and identifying a resonance frequency of the radio signal by setting an inductance level of the coil; a first switching portion electrically connected to the first signal retrieving portion and the second signal retrieving portion and adapted to switch selectively to one of the resonant circuit of the first signal retrieving portion and the coil of the second signal retrieving portion according to an external setting so as to output the radio signal retrieved; a third signal retrieving portion retrieving the radio signal through a conducting wire in a vehicular cigarette lighter; and a second switch portion electrically connected between the power insulation conversion circuit and the resonant circuit, electrically connected to the third signal retrieving portions, and switching selectively to one of the power insulation conversion circuit of the first signal retrieving portion and the third signal retrieving portion according to an external setting, so as to output the radio signal retrieved; and a signal processing module electrically connected to the first switching portion and adapted to perform spectrum spreading on the radio signal received and augment a strength thereof so as for the radio signal thus processed to be provided to the transceiver.