Coaxial electric cable
Axon Cable

Uses of coaxial cables extend to every application in which a signal must have a minimum distortion and attenuation or where elimination of external interference plays a leading part.
The use of a coaxial cable helps to prevent many of the problems created by bifilary wires : the twin conductor construction of coaxials (central conductor and shield) separated by a dielectric prevents the reception of outside interference, and at the same time, the loss of the electromagnetic wave.
Different types of coaxials are determined by the materials employed (conductors and dielectrics), the outer diameter, the characteristic impedance, the capacitance, the attenuation and the frequency range.
The most widely used coaxial cables are those according to the American norm MIL-C-17, the RG (Radio Frequency Government) references and the French norm NF-C 93550, KX references.