Semi Flexible coaxial cable on a plastic reel. It has an Impedance of 50 Ohm. It is used to route electrical signals through the antenna. It has an inner conductor of Silver-Plated Copper which is surrounded by a PTFE Dielectric. The outer conductor is a Tin Soaked Copper Braid. The complete cable has an outer jacket which is typically LSZH or FEP. For a maximum operating voltage of 1900 Volts. Reel contains approximately 300 Metres of cable. The reel is 350-400mm in Diameter.

GIR 1 AND 6 Text to Code 8544, 8544 20, 8544 2000, 8544 2000 90. HSEN To Heading 8544.