The invention relates to an input circuit for an FM/AM radio receiver with an FM intermediate frequency trap circuit (3) and an AM image frequency trap circuit (5) comprising an FM input circuit for receiving frequency-modulated input signals and an AM input circuit for receiving amplitude-modulated input signals in the output of a circuit for remote FM selection on the antenna output. In order to better decouple the FM input circuit from the AM input circuit, an AM image frequency trap circuit (5) is connected behind the FM intermediate frequency trap circuit (3) and PIN diodes (D1, D2) are provided between the FM intermediate frequency trap circuit (3) and the AM image frequency trap circuit (5) for switching from AM to FM mode wherein said PIN diodes (D1, D2) connect the FM intermediate frequency trap circuit (3) for high frequency signals to the ground when the FM mode is selected. In the AM mode, a control voltage is applied on the switching device between the FM intermediate frequency trap circuit (3) and the AM image frequency trap circuit (5) for automatic gain control (AGC).