RG58/U is a compact coaxial cable for RF equipment interconnections where the circuit design accepts its listed electrical characteristics. This version has a solid plain copper centre conductor, low-density PE dielectric and tinned copper braid screen. PVC and LSZH sheath options are listed, with a nominal overall diameter of 5.00 mm. The impedance on this page is 53±3 ohms; include that value when checking compatibility with the equipment and connectors.
Inner conductor | Plain copper | Φ0.80 ± 0.025 mm |
Dielectric | Low density PE | Φ2.95 ± 0.10 mm |
Outer conductor | Tinned copper | 112 x 0.13 mm |
Shield coverage | 95% | |
Sheath | PVC or LSZH | Φ5.00 ± 0.10 mm |
| Impedance | 53±3 Ohm0 | |
| Nominal capacitance | 94pF/m | |
| Velocity of propagation | 66% | |
| Insulation resistance | >2000 Mohm.Km | |
| Inner conductor resistance | 35.0 Ohm/Km | |
Outer conductor resistance | 16.5 Ohm/Km | |
Test/Operatig Voltage(max) | 5KV/2KV | |
Operating temperature range | -30 °C - +70 °C | |
Copper Weight | 18.7 Kg/Km | |
Cable weight (approx.) | 39.9 Kg/Km | |
Screening effectiveness | 100-900 MHz | >55dB |
Frequency (MHz) | Attenuation (dB/100 m) | Attenuation (dB/100ft) |
| 50 | 9.1 | 2.77 |
100 | 13.1 | 3.99 |
200 | 19.4 | 5.91 |
400 | 28.4 | 8.66 |
500 | 32.2 | 9.82 |
600 | 35.7 | 10.88 |
860 | 44.8 | 13.66 |
1000 | 49.0 | 14.94 |
30-300 MHz | >26dB |
300-600 MHz | >25dB |
600-900 MHz | >24dB |
Solid centre conductor with a specified diameter of 0.80±0.025 mm.
Tinned copper braid with 95% listed coverage.
Separate attenuation and return-loss tables support RF connection selection.
Specify the required sheath material, route length and connector interface. Check cable and connector loss at the operating frequency, and select a termination suited to the solid conductor and 2.95 mm nominal dielectric diameter. For applications requiring a particular military detail specification, include the exact document and required qualification evidence with the enquiry.
RG58 Armoured Coaxial Cable, 50 Ohm, Tinned Copper and LSZH Sheath
RG213 Armoured Coaxial Cable, 50 Ohm, LSZH Marine Construction
Is this the stranded RG58 construction?
This RG58/U page lists a solid plain copper centre conductor. Other RG58 variants can use different conductor arrangements.
Which impedance is stated here?
The listed impedance is 53±3 ohms. Use this value when checking system compatibility.
Can PVC and LSZH be treated as the same sheath?
They are different material options. State the required sheath and applicable fire-performance documentation when ordering.
What attenuation is listed at 100 MHz?
The table gives 13.1 dB per 100 m at 100 MHz for this construction.
What dimensions matter for a connector?
Check the 0.80 mm nominal centre conductor, 2.95 mm nominal dielectric diameter and 5.00 mm nominal finished diameter, including their listed tolerances.
