Description
RG-223 is a premium, double-shielded version of the standard RG-58, designed for 50 Ohm systems that demand superior shielding effectiveness. Manufactured to meet strict MIL-C-17 military specifications, it is optimized for high-performance RF environments where signal leakage or external noise could compromise system integrity. The cable features a solid silver-plated copper center conductor, which provides exceptional conductivity and signal stability compared to standard bare copper or alloy cores.
The defining feature of RG-223 is its dual-layer silver-plated copper braid. This double-shielding architecture provides significantly higher RF isolation (typically >60 dB) than single-shielded cables, making it ideal for use in dense electronic racks and high-interference areas. The silver plating on both the conductor and the shields utilizes the “skin effect” to enhance high-frequency performance and provide superior resistance to corrosion. Encased in a non-contaminating Black PVC jacket, it is built to withstand environmental degradation and maintain stable electrical properties for years. It is most commonly terminated with BNC, N-Type, or TNC connectors.
Key Technical Advantages
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Superior Double Shielding: Two layers of silver-plated copper braid offer exceptional protection against electromagnetic interference (EMI) and minimize signal cross-talk.
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Silver-Plated Signal Path: Silver plating on the internal conductor and both shields ensures low resistance and prevents oxidation, maintaining performance over time.
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High-Frequency Precision: Optimized for performance into the GHz range, providing a flat response and low VSWR for critical RF infrastructure.
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Non-Contaminating Jacket: The Type IIA PVC jacket prevents plasticizer migration into the dielectric, ensuring the cable’s electrical properties remain stable over a long operational life.
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Exceptional Signal Isolation: The double-shielded design ensures minimal signal egress, protecting sensitive adjacent equipment from interference.
Key Features
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Cable Type: RG-223 / U (MIL-C-17).
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Impedance: 50 Ohm.
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Center Conductor: 19 AWG (Solid Silver-Plated Copper).
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Shielding: Double Silver-Plated Copper Braid (95% coverage per layer).
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Jacket Materials: Non-contaminating Black PVC (Type IIA).
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Common Applications: Laboratory test leads, tactical radio interconnects, GPS antenna systems, and cellular base station jumpers.
Technical Summary
| Parameter | Specification (Typical) |
| Impedance | 50 ± 2 Ohm |
| Outer Diameter | ~5.40 mm |
| Velocity of Propagation | 66% |
| Capacitance | ~30.8 pF/ft |
| Attenuation @ 400MHz | ~8.8 dB / 100ft |
| Operating Temp | -40°C ~ +85°C |






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