A method for crimp mounting a high-frequency (HF) electrical crimp connecting device to an electrical cable includes the steps of crimping a ferrule into a mounting state wherein its maximum diameter is fixed, and arranging the ferrule in its mounting state over an exposed shielding conductor of the cable. A terminal is crimped onto an inner conductor of the cable, and a shielding contact sleeve is placed over the cable and crimped, at least in the area of the ferrule. A target impedance or impedance range of the resulting cable is set according to at least one of a dimension of at least one crimping tool used to perform the crimping steps, or at least one dimension of at least one of the resulting crimps performed by the at least one crimping tool.