How do RG6 and RG8 coaxial cables differ?

How do RG6 and RG8 coaxial cables differ?

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Maybe you don’t know it but might already have a coaxial (sometimes known as RG), cable operating into one or more of your devices and gadgets. And that is because these cables are primarily and commonly utilized for television and high-speed internet. These cables have a particular characteristic, they have a single silver pin at least one end, enveloped in a screw-on bracket.

Despite the fact most gadgets come with indications including the type of coaxial wire you are using, the cables are mainly similar with just minor weight and size variations. But the model does not really make a difference. In this article, we will dive deeper into some of the differences that exist between various coaxial cables.

RG8 is a class of coaxial cable appropriate to employ in carrying radio transmission signals. They are mostly used and found in radio stations, audio control rooms, or as connections for exterior radio antennas. RG6 cables are mainly used for cable internet, cable TV, and that is the most significant difference between the popular RG6 coaxial cables and RG8 cables. RG8 is unable to carry clear video signals because of its design and, consequently, is more appropriate for radio signals.

How do RG6 and RG8 coaxial cables differ?

Essential components of an RG cable

Most RG cables have a standard composition. There is a covered inner conductor (Typically copper or aluminum) protected by a copper foil and encased in black or white plastic. The conductor carries the signal while the insulating material and shield keep the conductor’s integrity. Insulation comes in various thicknesses, and that is what increases the dimension of the cable and consequently changes size and weight, even though the differences are habitually microscopic.

Quality of insulation

Another of the several things that different coaxial cables have in common is the distinction of their insulation. Since these wires are usually used outdoors, the effects of the natural environment–rain, snow, and so on–are an extremely important thing to consider. The average coaxial cable has a category of MIL-C-17, which is the standard grade needed to preserve the inner workings from everyday environmental harm.

RG8 cables are thicker in comparison to the standard RG6 wires that are commonly used for cable TV and some other digital and video signals. They have a thicker nucleus at 2.17 millimeters compared to the 1.0T-millimeter diameter of RG6 wires, and they are likely to have thicker dielectric covering and a thick outer coating. This characteristic is what makes them perfect to be used for outdoor conditions like connecting cables for satellite dishes and antennas. They also give better coverage against outside radio interference. Another important distinction with RG6 cables is the impedance rate of only 50 ohms compared to the 75 ohms of RG6 cables.

Impedance defines the utilization of cable. RG-6 is used with all 75 ohms equipment that includes a low-noise block downconverter for satellite reception, and the Set-Top box for Satellite reception. While RG-8 is used for Wireless transmission, and it is also commonly utilized for Transmitting antenna and Booster amplifier for wireless RF transmission.

Because of their different compositions, their uses are different. But they look similar.

If you would like to receive a quote for any of Custom Cables please do not hesitate to contact us by sending an email to [email protected] or calling in the USA this phone number (682-325-1944)

Jessica Cardona


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