Double-shielded coaxial cable with copper plated steel inner conductor. The conductor is covered with physically foamed nitrogen (N) polyethylene, which has particularly effective dielectric insulation. Shielding is made in accordance with the Double standard, which uses double conductor protector. The first of them is a layer of AL/PET aluminium foil and second one is aluminium wire braiding with optical coverage 75%. The outer sheath is made of white PVC, which protects against mechanical damage and allows quick and comfortable cable installation.