A series of standard types of coaxial cable were specified for military uses, in the form "RG-#" or "RG-#/U". They date from World War II and were listed in MIL-HDBK-216 published in 1962. These designations are now obsolete. The RG designation stands for Radio Guide; From The obvious place.
What kind of cable is used for satellite TV?
The difference is found in the specific signals they're used for: RG-59 is the norm for standard Cable (CATV), while RG-6 is the coax that handles digital video signals and satellite TV.
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