Coaxial cables also have a sheath on the shields for the mechanical protection of the cable. The term coaxial or coax is derived from the fact that the inner conductor and the shield have a common geometric axis. Coaxial cable was invented in 1880 by the English engineer and mathematician Oliver Heaviside

Technical Specifications:

 High Frequency coaxial cable according to standard JIS3501 
 Insulation resistance: At least 10,000 MΩ·km 
 Voltage test: 2000V AC 50 HZ 
 The characteristic impedance of the cable (Z0) is determined by the constant value of the internal dielectric insulation and the internal and external conductor radius. The value of the characteristic impedance is significant since the impedance of source and load must match to ensure maximum power transmission
Cable Structure:
 CU/PE/FOIL AL/CU/PVC 
 Annealed copper conductor group 1 or 2 according to standard IEC60228 
Insulation:
Polyethylene Foam 
 Aluminum foil 
 Annealed copper texture PVC coating which is white and UV resistant 
Application:
 Coaxial cable is used as a data transmission line for radio and television signals. They are used as power lines to connect radio transmitters and receivers to the antenna. These cables are used in computer networks. Another application of these cables is the transmission of TV and satellite signals. One of the advantages of the coaxial cable over other radio transmission lines is that in an ideal coaxial cable, there is an electromagnetic field only in the space between the conductor and the shield (internal and external conductor) 
This advantage makes it possible to use this cable beside metal objects without the energy losses that happen in other transmission cables. Moreover, the coaxial cable protects the signal against interference from external electromagnetic fields by the shield. Cables with larger diameter and multi-layer shields have less leakage. This property of coaxial cable makes it a good option for transmitting weak signals that do not tolerate interference from environmental factors 
This company’s coaxial cables are all copper-based which have the following specifications that can be changed according to the customers’ request and order. Generally, coaxial cables are classified into two types of antenna cables 4.5 c-2v and camera cables RG59 whose technical specifications can be seen in the table below