Patent ID: 7454180

Claim:
A vehicle-mounted receiving apparatus comprising: a first antenna that receives a broadcasting signal; a first low-noise amplifier connected to the first antenna; and a first receiving processing unit that is provided at a back stage of the first low-noise amplifier and detects at least the receiving intensity and the C/N during demodulation of the broadcasting signal, wherein the first low-noise amplifier is connected to the first receiving processing unit through a first cable and a bypass circuit is provided in parallel to the first low-noise amplifier so as to bypass the first low-noise amplifier, and in a case in which the intensity of the broadcasting signal is more than a predetermined value, when the C/N is more than a first predetermined value and less than a second predetermined value higher than the first predetermined value, the broadcasting signal is transmitted to the first cable through the first low-noise amplifier, and when the C/N is less than the first predetermined value or more than the second predetermined value, the broadcasting signal is not input to the first low-noise amplifier but transmitted to the first cable through the bypass circuit.