The coax construction is identical for all sizes: inner conductor, foamed dielectric, outer conductor, outer jacket black. This assures the same connector plugs and clamps can always be used. The only difference between the various variants is the form of the opening of the outer conductor. These forms determine the relationship between the inner and outer conductors. Electrical characteristics, such as attenuation, coupling loss, reflection factor as well as environmental conditions (such as dust, salt, moisture, etc.) are influenced in this way. The optimum cable can then be determined from the knowledge of these parameters and the application data (reach, frequency range, etc.) The technical differences can be seen from the data for the system loss and the 120 dB length. The outer jacket is made of black polyethylene.