a converter for terminating a coaxial connector to a coaxial cable when the cable shield layer outer diameter is larger than an interior dimension of the connector shell . the converter includes a conductive shell having a first end and a second end . the first end of the converter shell has an inner diameter larger than the outer diameter of the cable conductive shield layer , and the second end of the converter shell has an outer diameter smaller than the interior dimension of the connector shell . a dielectric insulation insert is positioned with the converter shell . the converter may be designed to match the impedance of either the coaxial cable or the connector , or the converter may smoothly transition from the impedance of the cable to the impedance of the connector .