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Category 3 wire was originally developed for voice and low speed data applications. Category 5 was originally developed for high speed data, such as 100 Mb/s Ethernet. However, when it was determined that Category 5 did not reliably support Gigabit Ethernet, Category 5e (enhanced) was developed. Since there was only a small price premium for Category 5e, the market rapidly shifted to the better cable. Although Category 3 can continue to be used for voice, many installers use Category 5e, or even Category 6, for "future-proofing." There are two versions of RG-6 coaxial cables. The CATV version is tested to 1.0-1.4 GHz to support cable signals, while the satellite version is tested to 2.2-2.4 GHz. We supply quad-shield RG-6 in satellite grade. For CCTV applications typically a RG-59 or RG-6 coaxial cable is used with 95% copper braid coverage. This is because at baseband frequencies this construction provides better shielding. However, broadband video systems must use an aluminum braid and foil shielding system. (Info in this section is from ADI.) |