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Televes

0454-2013

What is the difference between a coaxial cable with its inner core of copper and another made of copper-clad Steel?

Respuesta: 

EXPERT OPINION

While the elements that support an installation of SMATV (5-2150MHz) could be used in a CATV facility, upside down do not add up.
And with the coaxial cable it is the same: inner core made of copper-clad steel, typically used by cable operators, in general terms is not recommended for DTT distribution networks and SMATV.
The difference between a cable with its inner core made of steel or made

 

 

 

of copper, results in a remarkable difference in conductivity, strength and, above all, its resistance to corrosion.
Effectively, at high frequencies, the outer layer of the copper-clad steel performs as a copper conductor; nevertheless this conductivity is being lost when environmental conditions start to deteriorate the steel.The joints between devices are sensitive to these circumstances, precisely where the

 

 

 

 

impedance matching is more critical, and from which depends largely, the quality of the digital signal to be distributed.
Conclusion: Although the legislation allows the use of copper-clad steel in operator networks, the copper is ideal for SMATV networks and, ultimately, to all those networks wanting to keep unchanged its characteristics

Javier Esteban
  Technical Assistance Manager

Televes
Televes Televes