RG-6/U is a common coaxial cable used in a variety of residential and commercial applications. The characteristic impedance of RG-6/U coaxial cable is 75 ohms. The term RG-6 is generic and applies to a variety of cable designs that differ from each other in shielding characteristics, center conductor composition, dielectric type, and jacket type. RG was originally a unit designator for bulk radio frequency (RF) cables in the United States Military's Joint Electronic Type Designation System [1]. The suffix /U indicates general utility use. Numbers are assigned sequentially. The RG_unit indicator is no longer part of the JETDS system (MIL-STD-196E), and cables sold today under the RG-6 label are unlikely to meet mil-spec. In practice, the term RG-6 is often used to refer to a coaxial cable with an 18 AWG (1.024 mm) center conductor and 75 ohm characteristic impedance.
Application
A common type of 75-ohm coaxial cable is the cable television (CATV) distribution coaxial cable, which is used to route cable television signals into and within the home. CATV distribution coaxial cables typically have a copper clad steel (CCS) center conductor and combined foil/aluminum braid shield, typically with low coverage (about 60%). 75 Ohm cables are also used in professional video applications to carry baseband analog video signals or Serial Digital Interface (SDI) signals; in these applications the center conductor is usually solid copper and the shield is much heavier (usually aluminum foil and 95% copper braid), and tolerances are more tightly controlled to improve impedance stability.
Type
Like most cables, Type RG-6 cables come in many different types and are designed for a variety of applications, including:
Ordinary or household electrical wiring is designed for indoor or outdoor house wiring.
"Submerged" cables are impregnated with water blocking gel for use in underground conduits or direct burial.
The messenger or antenna may contain some waterproofing, but the difference is the addition of steel messenger wire along its length to withstand the tension involved in an air drop from a utility pole.
Plenum wire comes with a Low Smoke Zero Halogen (LSZH) jacket that burns without producing toxic fumes. LSZH is usually irradiated PVC. Heating drives off volatiles, making the resulting product more heat resistant.
If you are interested in our products or have any questions, please feel free to contact us. ebeestock electronic engineers will provide you with professional services.
