In the 1940s, RG/U cabling, a type of coaxial cable, was established to standardize the transmission of radio frequency signals. The “RG” stands for “Radio Guide,” and the “U” indicates “Utility.” These cables consist of a central conductor, dielectric insulator, metallic shield, and outer protective layer, providing excellent shielding and signal integrity. Widely used in amateur radio, military, and commercial applications, RG/U cables support a variety of frequencies and applications, including antenna connections and data transmission. Their establishment has been crucial for ensuring reliable, high-quality communication, significantly benefiting the radio and telecommunications industries.
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