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== DS-3 ==A coaxial cable is one that consists of two conductors that share a common axis. The inner conductor is typically a straight wire, either solid or stranded and the outer conductor is typically a shield that might be braided or a foil. The point to coaxial cable is to shield the signal from interference. Open wire carries a signal better, but is subject to so many types of interference, coaxial cable is used as a solution. Coaxial cable is a trade off, the shielding protects the signal from interference, but signal loss is present. Coaxial cable is used to carry radio signals, video signals, measurement signals and data. There is always some signal radiating from coaxial cable. Hence, the outer conductor also functions as a shield to reduce coupling of the signal into adjacent wiring. More shield coverage means less radiation of energy. Coaxial cable are typically characterized with the impedance and cable loss. The length has nothing to do with a coaxial cable impedance. Characteristic impedance is determined by the size and spacing of the conductors and the type of dielectric used between them. For ordinary coaxial cable used at reasonable frequency, the characteristic impedance depends on the dimensions of the inner and outer conductors. Coaxial cable was invented in 1929 and first used commercially in 1941. AT&T established its first cross-continental coaxial transmission system in 1940. [[Image:coaxialcabledata01.png]] == Common Coaxial Cable Types == === DS-3 ===== RG-6U 75 Ohm ===== RG-6U 75 Ohm ===RG6U, RG-6U. Suitable for CatTV and Satellite small dish signal from LNB.RG6, RG6U, RG-6U. Suitable for CatTV and Satellite small dish signal from LNB. It has low loss at high frequency for cable television, satellite television and cable modems.'''Dual RG6/U Quad Shield''' is ideal for antenna, cable television and satellite installations. Make two cable runs at one time for dual LNB satellite or satellite and antenna installations. This cable is 18AWG copper clad steel center conductor surrounded by a foam polyethylene dielectric. A bonded aluminum foil and 60% aluminum braid over another foil and 40% aluminum braid provide 100% shield coverage. This cable meets specifications for CL1, CL2, CM, CMX and CMG installations. Swept tested to 3GHz to ensure performance at applicable frequencies.RG-6UQ, RG-6QS, '''Dual RG6/U Quad Shield''' provides higher protection against radio interference, loss, and is ideal for antenna, cable television and satellite installations. Make two cable runs at one time for dual LNB satellite or satellite and antenna installations. This cable is 18AWG copper clad steel center conductor surrounded by a foam polyethylene dielectric. A bonded aluminum foil and 60% aluminum braid over another foil and 40% aluminum braid provide 100% shield coverage. This cable meets specifications for CL1, CL2, CM, CMX and CMG installations. Swept tested to 3GHz to ensure performance at applicable frequencies.* cctv== RG-58 Coaxial 50-Ohm ===== RG-11U 75 Ohm === Used for long drops and underground. This cable type is used to minimize signal loss, such as due to low signal or a long cable run. Video run distances between 1200 and 1700 feet should use RG-11U. * rf and tv antenna* satellite lnb signal* cctv === RG-58 Coaxial 50-Ohm ===When used for Ethernet, it provides a maximum segment length of 185 meters.This cable is used for radiocommunication and amateur radio, thin Ethernet (10base2) and NIM electronics. When used for Ethernet, it provides a maximum segment length of 185 meters.== RG-59 75 Ohm ===== RG-59 75 Ohm ===It will carry baseband video in closed-circuit television. It was once (long ago) used for cable television but the signal loss was too high. Generally it has poor shielding but will carry an HQ HD signal or video over short distances. This cable should not be used for Cable TV.* cctv=== RG-62U 92 Ohm ===RG62U, RG-62 U. This cable is most commonly used in automobiles for the car stereo radio antenna. It is also used for the once popular ARCNET networking system for computers. Original ARCNET used RG-62/U coax cable and either passive or active hubs in a star-wired bus topology, a layout eventually copied by modern twisted pair Ethernet LANs. == Specifications Chart =={| {{table}}| align="center" style="background:#f0f0f0;"|'''Type'''| align="center" style="background:#f0f0f0;"|'''Z0(Ω)<BR>Ohms'''| align="center" style="background:#f0f0f0;"|'''Dielectric<BR>Type'''| align="center" style="background:#f0f0f0;"|'''Capacitance<BR>(pF/ft)'''| align="center" style="background:#f0f0f0;"|'''O.D.<BR>(in.)'''| align="center" style="background:#f0f0f0;"|'''dB/100 ft<BR>@400 MHz'''| align="center" style="background:#f0f0f0;"|'''Vmax<BR>(rms)'''| align="center" style="background:#f0f0f0;"|'''Shield'''|-| RG-4 ||50||PE ||30.8||0.226||11.7||1,900||Braid |-| RG-5 ||52.5||PE ||28.5||0.332||7.0||3,000||Braid |-| RG-5A/B ||50||PE ||30.8||0.328||6.5||3,000||Braid |-| RG-6 ||76||PE ||20.0||0.332||7.4||2,700||Braid |-| RG-6A ||75||PE ||20.6||0.332||6.5||2,700||Braid |-| RG-8 ||52||PE ||29.6||0.405||6.0||4,000||Braid |-| RG-8A ||52||PE ||29.6||0.405||6.0||5,000||Braid |-| RG-9 ||51||PE ||30.2||0.420||5.9||4,000||Braid |-| RG-9A ||51||PE ||30.2||0.420||6.1||4,000||Braid |-| RG-9B ||50||PE ||30.8||0.420||6.1||5,000||Braid |-| RG-10 ||52||PE ||29.6||0.463||6.0||4,000||Braid |-| RG-10A ||52||PE ||29.6||0.463||6.0||5,000||Braid |-| RG-11 ||75||PE ||20.6||0.405||5.7||4,000||Braid |-| RG-11A ||75||PE ||20.6||0.405||5.2||5,000||Braid |-| RG-12 ||75||PE ||20.6||0.463||5.7||4,000||Braid |-| RG-12A ||75||PE ||20.6||0.463||5.2||5,000||Braid |-| RG-17A ||52||PE ||29.6||0.870||2.8||11,000||Braid |-| RG-22 ||95||PE ||16.3||0.405||10.5||1,000||Braid |-| RG-22A/B ||95||PE ||16.3||0.420||10.5||1,000||Braid |-| RG-23/A ||125||PE ||12.0||0.650||5.2||3,000||Braid |-| RG-24/A ||125||PE ||12.0||0.708||5.2||3,000||Braid |-| RG-34 ||71||PE ||21.7||0.625||5.3||5,200||Braid |-| RG-34A ||75||PE ||20.6||0.630||5.3||6,500||Braid |-| RG-35 ||71||PE ||21.7||0.928||2.8||10,000||Braid |-| RG-35A/B ||75||PE ||20.6||0.928||2.8||10,000||Braid |-| RG-55B ||53.5||PE ||28.8||0.200||11.7||1,900||Braid |-| RG-58 ||53.5||PE ||28.8||0.195||11.7||1,900||Braid |-| RG-58A ||52||PE ||29.6||0.195||13.2||1,900||Braid |-| RG-58B ||53.5||PE ||28.8||0.195||14.0||1,900||Braid |-| RG-58C ||50||PE ||30.8||0.195||14.0||1,900||Braid |-| RG-59/A ||73||PE ||21.1||0.242||10.5||2,300||Braid |-| RG-59B ||75||PE ||20.6||0.242||9.0||2,300||Braid |-| RG-62/A/B ||93||ASP ||13.5||0.242||8.0||750||Braid |-| RG-63/A/B ||125||ASP ||10.0||0.405||5.5||1,000||Braid |-| RG-65/A ||950||ASP ||44.0||0.405||16 @5MHz ||1,000||Braid |-| RG-71/A/B ||93||ASP ||13.5||0.245||8.0||750||Braid |-| RG-79/A/B ||125||ASP ||10.0||0.436||5.5||1,000||Braid |-| RG-83 ||35||PE ||44.0||0.405||9.0||2,000||Braid |-| RG-88 ||48|| ||50.0||0.515||0.7 @1MHz ||10,000||Braid |-| RG-108/A ||78||PE ||19.7||0.235||2.8 @10MHz ||1,000||Braid |-| RG-111/A ||95||PE ||16.3||0.478||10.5||1,000||Braid |-| RG-114/A ||185||ASP ||6.5||0.405||8.5||1,000||Braid |-| RG-119 ||50||ST ||29.4||0.465||3.8||6,000||Braid |-| RG-120 ||50||ST ||29.4||0.523||3.8||6,000||Braid |-| RG-122 ||50||PE ||30.8||0.160||18.0||1,900||Braid |-| RG-130 ||95||PE ||17.0||0.625||8.8||3,000||Braid |-| RG-131 ||95||PE ||17.0||0.683||8.8||3,000||Braid |-| RG-133/A ||95||PE ||16.3||0.405||5.7||4,000||Braid |-| RG-141/A ||50||ST ||29.4||0.190||9.0||1,900||Braid |-| RG-142/A/B ||50||ST ||29.4||0.195||9.0||1,900||Braid |-| RG-144 ||75||ST ||19.5||0.410||4.5||5,000||Braid |-| RG-164 ||75||PE ||20.6||0.870||2.8||10,000||Braid |-| RG-165 ||50||ST ||29.4||0.410||5.0||5,000||Braid |-| RG-166 ||50||ST ||29.4||0.460||5.0||5,000||Braid |-| RG-174||50|| ||30.5||0.110||14.7|| ||Braid|-| RG-177 ||50||PE ||30.8||0.895||2.8||11,000||Braid |-| RG-178/A/B ||50||ST ||29.4||0.072||29.0||1,000||Braid |-| RG-179 ||70||ST ||20.9||0.100||21.0||1,200||Braid |-| RG-179A/B ||75||ST ||19.5||0.100||21.0||1,200||Braid |-| RG-180 ||93||ST ||15.4||0.140||17.0||1,500||Braid |-| RG-180A/B ||95||ST ||15.4||0.140||17.0||1,500||Braid |-| RG-210 ||93||ASP ||13.5||0.242||8.0||750||Braid |-| RG-211/A ||50||ST ||29.4||0.730||2.3||7,000||Braid |-| RG-212 ||50||PE ||29.4||0.332||6.5||3,000||Braid |-| RG-213 ||50||PE ||30.8||0.405||5.5||5,000||Braid |-| RG-214 ||50||PE ||30.8||0.425||5.5||5,000||Braid |-| RG-215 ||50||PE ||30.8||0.463||5.5||5,000||Braid |-| RG-216 ||75||PE ||20.6||0.425||5.2||5,000||Braid |-| RG-217 ||50||PE ||30.8||0.545||4.3||7,000||Braid |-| RG-218 ||50||PE ||30.8||0.870||2.5||11,000||Braid |-| RG-219 ||50||PE ||30.8||0.928||2.5||11,000||Braid |-| RG-223 ||50||PE ||19.8||0.211||8.8||1,900||Dbl Braid |-| RG-302 ||75||ST ||19.5||0.201||8.0||2,300||Braid |-| RG-303 ||50||ST ||29.4||0.170||9.0||1,900||Braid |-| RG-304 ||50||ST ||29.4||0.280||6.0||3,000||Braid |-| RG-307/A ||75||80||16.9||0.270||7.5||1,000||Braid |-| RG-316 ||50||ST ||29.4||0.102||20.0||1,200||Braid |-| RG-391 ||72|| ||23.0||0.405||15.0||5,000||Braid |-| RG-392 ||72|| ||23.0||0.475||15.0||5,000||Braid |-| RG-393 ||50||ST ||29.4||0.390||5.0||5,000||Braid |-| RG-400 ||50||ST ||29.4||0.195||9.6||1,900||Braid |-| RG-401 ||50||ST ||29.4||0.250||4.6||3,000||Cu. S-R |-| RG-402 ||50||ST ||29.4||0.141||7.2||2,500||Cu. S-R |-| RG-403 ||50||ST ||29.4||0.116||29.0||2,500||Braid |-| RG-405 ||50||ST ||29.4||0.086||13.0||1,500||Cu. S-R |-| 9914 (Belden) ||50|| ||26.0||0.405||10.0||------ || |-| |}[[Category:CCTV]][[Category:Satellite & Cable TV]]