RG-58

RG-58/U is a type of

Ω. "RG" was originally a unit indicator for bulk RF cable in the U.S. military's Joint Electronics Type Designation System

. There are several versions covering the differences in core material (solid or braided wire) and shield (70% to 95% coverage).

The outside diameter of RG-58 is around 0.2 inches (5 mm). RG-58 weighs around 0.025 lb/ft (37 g/m), exhibits approximately 25 pF/ft (82 pF/m) capacitance and can tolerate a maximum of 300 V potential (1800 W).[1] Plain RG-58 cable has a solid center conductor. The RG-58A/U features a flexible 7- or 19-strand center conductor.

Most

CB radio, amateur, police, fire, WLAN

antennas etc., are designed to work with a 50 Ω cable.

RG-58 cable is often used as a generic carrier of signals in laboratories, combined with BNC connectors that are common on test and measurement equipment such as oscilloscopes.

RG-58 in versions RG-58A/U or RG-58C/U was once widely used in "thin" Ethernet (10BASE2), for which it provides a maximum segment length of 185 meters. However, it has been almost completely replaced by twisted-pair cabling such as Cat 5, Cat 6, and similar cables in data networking applications.

RG-58 cable can be used for moderately high frequencies. Its signal attenuation depends on the frequency, e.g. from 10.8 dB per 100 m (3.3 dB per 100 feet) at 50 MHz to 70.5 dB per 100 m (21.5 dB per 100 feet) at 1 GHz.^[2]

References

^ "RG Coaxial and Triaxial Reference Guide" (PDF). Archived from the original (PDF) on 2012-05-11. Retrieved 2012-06-24.
^ Coaxial Cable Loss and Dynamics by Benton County ARES/RACES. Archived from the original on 20 Feb. 2020

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[1] "RG Coaxial and Triaxial Reference Guide" (PDF). Archived from the original (PDF) on 2012-05-11. Retrieved 2012-06-24.

[2] Coaxial Cable Loss and Dynamics by Benton County ARES/RACES. Archived from the original on 20 Feb. 2020

[2]

See also

References