RG58 is a widely used 50-ohm coaxial cable, primarily designed for radio frequency (RF) signal transmission and communication applications. It balances flexibility with moderate performance, making it a popular choice for amateur radio, test equipment, and short-range RF links.Impedance: 50 ohms, optimized for RF applications (e.g., antennas, transceivers).
| Spec. | Rg58/u | Rg58 a/u | Rg58 c/u | |
| Conductor | Material | Bc/Tc | Bc/Tc | Bc/Tc |
| Normal.Diameter | 19awg | 19*0.2mm | 19*0.18mm | |
| Insulation | Material | PE | Foam PE | PE |
| Normal.Diameter | 2.95mm | 2.90mm | 2.95mm | |
| Shield | Material | Bc/Tc Braiding | Bc/Tc Braiding | Bc/Tc Braiding |
| Coverage | 0.95 | 0.95 | 0.95 | |
| Jacket | Material | PVC/PE | PVC/PE | PVC/PE |
| Normal.Thick. | 0.80mm | 0.80mm | 0.80mm | |
| Normal.Diameter | 4.95mm | 4.90mm | 5.08mm | |
Center Conductor: Solid or stranded copper (typically AWG 20-22).
Insulation: Polyethylene (PE) dielectric (~2.95mm diameter).
Shielding: Single copper braid (90–95% coverage).
Outer Jacket: PVC or similar, with ~4.95mm overall diameter.
Frequency Range:Effective for DC to ~1 GHz; signal attenuation increases significantly at higher frequencies.
Attenuation:~0.112 dB/ft at 100 MHz (varies by manufacturer).
Applications
Radio Communication: Antenna feed lines for ham radio, CB radios.
Legacy Networking: Historical use in 10BASE2 Ethernet (thinnet).
Test & Measurement: Oscilloscope probes, signal generator connections.
Short-Range Video: Analog CCTV (less common than RG59).
Military/Aerospace: Internal wiring in some electronic systems.