Radio-frequency blocking filter of a coaxial construction, the radio-frequency blocking filter having the following features: - the radio-frequency blocking filter comprises an external conductor housing, having a housing base and a housing cover arranged at a distance from and opposing the housing base, between which a housing wall is provided peripherally; - the radio-frequency blocking filter comprises at least two resonators, which each comprise an internal conductor; - the internal conductors are each galvanically connected to the housing base and extend from the housing base towards the housing cover; - the internal conductors each end at a distance from the housing cover and/or are galvanically separated from the housing cover, - the radio-frequency blocking filter comprises an input terminal (20, 40) and an output terminal (30, 40), the signal line being galvanically connected or capacitively coupled to the input terminal (20, 40) on the one hand and to the output terminal (30, 40) on the other hand, characterised by the following features: - the signal line extends through the resonators of the radio-frequency blocking filter past the respective internal conductor so as to form a capacitive internal conductor coupling and/or resonator coupling in each case, - the signal line comprises at least one galvanic separation point in the form of a capacitive separation point, - the capacitive separation point is at a distance from and capacitively coupled to the internal conductors, - the resonators or internal conductors are each capacitively coupled to the signal line, - the radio-frequency blocking filter further comprises a holding and/or receiving device, which is braced on the internal conductor and/or fixed to the internal conductor, and two receiving spaces (72, 73), which are separated from one another by a partition wall; and - the first coupling face (51.1, 52.1, 53.1) is arranged in a first receiving space of the holding and/or receiving device, and the second coupling face (51.2, 52.2, 53.2, 54.2) is arranged in a second receiving space of the holding and/or receiving device. - the radio-frequency blocking filter comprises an external conductor housing, having a housing base and a housing cover arranged at a distance from and opposing the housing base, between which a housing wall is provided peripherally; - the radio-frequency blocking filter comprises at least two resonators, which each comprise an internal conductor; - the internal conductors are each galvanically connected to the housing base and extend from the housing base towards the housing cover; - the internal conductors each end at a distance from the housing cover and/or are galvanically separated from the housing cover, - the radio-frequency blocking filter comprises an input terminal (20, 40) and an output terminal (30, 40), the signal line being galvanically connected or capacitively coupled to the input terminal (20, 40) on the one hand and to the output terminal (30, 40) on the other hand, - the signal line extends through the resonators of the radio-frequency blocking filter past the respective internal conductor so as to form a capacitive internal conductor coupling and/or resonator coupling in each case, - the signal line comprises at least one galvanic separation point in the form of a capacitive separation point, - the capacitive separation point is at a distance from and capacitively coupled to the internal conductors, - the resonators or internal conductors are each capacitively coupled to the signal line, - the radio-frequency blocking filter further comprises a holding and/or receiving device, which is braced on the internal conductor and/or fixed to the internal conductor, and two receiving spaces (72, 73), which are separated from one another by a partition wall; and - the first coupling face (51.1, 52.1, 53.1) is arranged in a first receiving space of the holding and/or receiving device, and the second coupling face (51.2, 52.2, 53.2, 54.2) is arranged in a second receiving space of the holding and/or receiving device.