Two questions come to mind: First, why does coaxial cable have attenuation, and second, why does the attenuation vary so much with frequency? Figure 1 illustrates a plot of attenuation-versus-frequency for the latter, from 5 MHz to 3 GHz. Table 1 highlights some examples of attenuation-versus-frequency values for commonly available Series 6 drop and half-inch hardline coaxial cables. Unlike the more or less flat loss through a passive device over its design bandwidth, the attenuation through coaxial cable is much greater at higher frequencies than it is at lower frequencies. In particular, as radio frequency (RF) signals pass through coaxial cable, connectors, attenuators (pads), equalizers, and passive components such as splitters and directional couplers, those RF signals experience attenuation.
This remarkable feature eliminates the many bad practices that are used to clean center conductors that often damage the copper skin.Īll CommScope P3® and QR® cables are engineered and tested to 1.2 and 1.8 GHz frequencies required to deliver reliable Extended Spectrum DOCSIS (ESD) and help operators transition strategically to the next generation.What we call attenuation or loss is a decrease in the power of a signal or signals, usually measured in decibels. If not, the center conductor will come clean with a single pull of a center conductor cleaning tool.
Designed to shear away under the torsional forces applied when coring the cable, ACT™ often provides a clean center conductor as part of this process. The flexible alternative with superior performance characteristics, in a smaller cable.ĪCT™, or Advanced Coring Technology™, holds United States Patent 7,497,010- Method for manufacturing a coaxial cable with a strippable center conductor pre-coat. Polyethylene (PE) dielectric features closed-cell gas expanded foaming technology, with an impressive signal propagation at 87 percent of the speed of light. With billions of feet of coaxial cables deployed, CommScope is a trusted name.įor trunk and distribution applications, the 75-ohm P3® and QR® coaxial cables are the standard. Why? Because of design and construction techniques that produce a quality cable with excellent performance characteristics, at the right price.ĭeveloped to provide low RF attenuation and to integrate easily with existing plant cable, these hardline cables meet the increasing demands of modern broadband networks.
High-performance hardline cables that are easy to installĬommScope has supplied coaxial cables for over 40 years, since the dawn of CATV (cable television).
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