RG-213U Coaxial Cable is a high-frequency 50-ohm cable commonly used in military communication systems, RF signal transmission, amateur radio devices, and antenna connections. It has low signal loss, high shielding effectiveness, and strong physical protection advantages, making it ideal for indoor and outdoor applications.
RG-213U Coaxial Cable Structure
This cable meets MIL-C-17 specifications and is designed for applications requiring high power handling and low attenuation.
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Inner Conductor: 7-strand bare copper (2.26 mm diameter)
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Dielectric: Solid polyethylene (PE), approx. 7.24 mm
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First Shield (Inner): Tinned copper braid
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Second Shield (Outer): Tinned copper braid (double shielded)
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Jacket: Black PVC, flame-retardant and UV-resistant, approx. 10.3 mm OD
Product Application
The RG-213U Coaxial Cable is widely used in:
- Military-grade communication systems
- Amateur radio and ham radio setups
- Base station antenna connections
- RF signal transmission in high-frequency environments
- Test equipment and RF laboratories
- CB (Citizen Band) radio and emergency services
This cable is an excellent solution for long-range RF communications where signal integrity is critical.
RG-213U Coaxial Cable Technical Parameters
| Model | AWG/mm² | Outside diameter (mm) | impedance(Ω) | Rated Voltage (V) |
Attenuation @100MHz (dB/100m) |
Current carrying capacity (A) | Typical Application |
| RG-58/U | 20 AWG / 0.52 mm² | 4.95 mm | 50 | 1900 | 11.1 | 5–10 | Short range RF, instrumentation, radio |
| RG-59/U | 20 AWG / 0.64 mm² | 6.15 mm | 75 | 1500 | 6.6 | 5–10 | Video surveillance, CCTV, CATV |
| RG-6/U | 18 AWG / 1.02 mm² | 6.9 mm | 75 | 3000 | 5.7 | 10–15 | HDTV, satellite TV, broadcast |
| RG-213/U | 13 AWG / 2.26 mm² | 10.3 mm | 50 | 5000 | 7.7 | 20–25 | High power RF, military, radio towers |
| RG-174/U | 26 AWG / 0.14 mm² | 2.5 mm | 50 | 1000 | 23.5 | 3–5 | GPS, short-range signal transmission |
| RG-11/U | 14 AWG / 1.63 mm² | 10.3 mm | 75 | 4500 | 3.1 | 15–20 | Long distance CATV, broadcast infrastructure |
Key Features
| Key Features | – 50 Ohm impedance – MIL-C-17 compliant – Low signal loss over long distances – Double shielding for excellent EMI/RFI protection – I20Suitable for harsh environments and outdoor use |
What's the difference between RG-213U and RG-8?
RG-213U and RG-8 are both 50-ohm coaxial cables commonly used in RF communications, amateur radio, military, and antenna applications. While they are very similar, there are some subtle but important differences:
| Parameter | RG-213U | RG-8 |
| Impedance | 50 Ω | 50 Ω |
| Conductor Type | Stranded bare copper (flexible) | Solid or stranded copper (usually rigid) |
| Outer Diameter | ≈ 10.3 mm | ≈ 10.3 mm |
| Rated Voltage | 5000 V | 3500–4000 V |
| Attenuation @100MHz | ~7.7 dB / 100m | ~7.2–7.5 dB / 100m |
| Shielding | Double tinned copper braid (stronger EMI protection) | Single or double braid (varies) |
| Flexibility | More flexible – better for outdoor/movable setups | Less flexible – better for fixed installations |
| Military Spec | Yes (MIL-C-17F/74) | No (depends on manufacturer) |
| Typical Use | Military, broadcast, RF towers, outdoor | General RF, lab, amateur radio |
ZMS Cables is sure to be the reliable RG-213U 50 Ohm Coaxial Cable supplier you are looking for. Contact ZMS Cable today to get a quote or request a sample. We offer custom cable services to meet your project needs.