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Inner conductor

The inner conductor (also known as the core) is usually a rigid copper conductor. This has different diameters depending on the design of the coaxial cable. The inner conductor is surrounded at a constant distance by a hollow cylindrical outer conductor and can be made of different materials.

An overview of the different materials:

 Cu solid Solid copper
 Cu stranded wireCopper stranded wire
 AlCu stranded wireCopper stranded wire with aluminium core
 CuAg stranded wireSilver-plated copper stranded wire