The RG-58 cable is a coaxial cable (an electrical cable with an inner conductor surrounded by a tubular insulating layer all of which are surrounded by a conductive layer and finally covered with a thin insulating layer on the outside) often used low-power signal and RF connections that is used for wiring purposes specific. The cable has either a 50 or 52 Ohm characteristic impedance. The RG-58 cable frequently acts as a generic carrier of power signals. The RG-58 cable is specially designed to work with most two-way radio systems. Most two-way radio communication systems, such as marine SSB, CB radio, marine VHF, amateur, police, fire, WLAN antennas etc, are designed to work with 50 Ohm cable.
The RG-58 cable is at times collectively used with BNC connectors that are commonly found in oscilloscopes. The BNC connector is in fact the common connector for the RG-58 cable. The BNC (stand for Bayonet Neill-Concelman) connector is a very common type of RF connector used for terminating coaxial cable. The BNC connector is widely used in analog and Serial Digital Interface video signals, amateur radio antenna connections, aviation electronics (avionics) and many other types of electronic test equipment.