General Product Overview
| Feature | Specification |
| Product Model | 179D/75 (Double Shielded Type) |
| Part Number | RG179D/75 |
| Insulation Material | PTFE (Polytetrafluoroethylene) |
| Jacket Material | FEP (Fluorinated Ethylene Propylene) |
| Maximum Operating Voltage | 1200 Volts |
| Operating Temperature Range | -55 degrees Celsius to +200 degrees Celsius (-67 degrees Fahrenheit to +392 degrees Fahrenheit) |
| Minimum Bending Radius (Static) | 12.0 Millimeters |
| Optimal Preservation Period | Two Months |
| Available Colors | Full spectrum color list available (Black, White, Gray, Yellow, Blue, Red, Green, Orange, Brown, Dark Gray, White-Gray) |
Precision Construction Details
| Layer Component | Material Specification | Construction Design (n/mm) | Diameter (mm) |
| 1. Inner Conductor | Silver-plated Copper Wire | 7 x 0.102 | 0.306 plus or minus 0.02 |
| 2. Insulation Layer | PTFE (Polytetrafluoroethylene) – Natural | Not Applicable | 1.60 plus or minus 0.05 |
| 3. Shielding Layer 1 (Inner Braid) | Silver-plated Copper (Greater than or equal to 90 percent Coverage) | 5 / 0.10 | 2.05 plus or minus 0.05 |
| 4. Shielding Layer 2 (Outer Braid) | Silver-plated Copper (Greater than or equal to 90 percent Coverage) | 6 / 0.10 | 2.45 plus or minus 0.05 |
| 5. Outer Jacket | FEP (Fluorinated Ethylene Propylene) | Not Applicable | 2.90 plus or minus 0.10 |
Electrical Performance Characteristics
| Performance Parameter | Technical Value |
| Characteristic Impedance (at 1ns) | 75 plus or minus 2 Ohm |
| Capacitance | 64 plus or minus 4 picofarads per meter |
| Propagation Velocity | 70 plus or minus 2 percent |
| Voltage Standing Wave Ratio (0 to 6 Gigahertz) | Less than or equal to 1.14 |
| Maximum Operating Voltage | 1200 Volts |
Signal Attenuation Reference Table (DC to 1 GHz)
| Frequency (Gigahertz) | Maximum Attenuation (Decibels per meter) |
| 0.1 GHz | Less than or equal to 0.27 dB per meter |
| 0.4 GHz | Less than or equal to 0.54 dB per meter |
| 1.0 GHz | Less than or equal to 0.87 dB per meter |
Professional Industry Advantages
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Ultimate Electromagnetic Isolation: The “D” (Double) shielding architecture incorporates two successive layers of silver-plated copper braiding. This provides industry-leading shielding effectiveness, ensuring clean signal transmission in environments with heavy electrical noise or dense high-frequency interference.
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Precision 75 Ohm Impedance Matching: Specifically engineered for high-end video and broadband systems. It guarantees minimal signal reflection and prevents digital artifacting or “ghosting” in high-definition imaging applications.
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Extreme Thermal Endurance: By combining high-grade PTFE and FEP materials, this cable retains its full mechanical and electrical integrity across an ultra-wide spectrum from -55 degrees Celsius to +200 degrees Celsius, outperforming standard PE-based coaxial cables.
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High-Voltage & Power Margin: With a maximum operating voltage of 1200 Volts, it provides a significant safety factor for specialized internal electronics that require both power and high-frequency signal delivery.
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Superior Chemical and Environmental Immunity: The FEP jacket is completely non-reactive and highly resistant to moisture, ultraviolet radiation, industrial oils, and corrosive fluids, ensuring a maintenance-free service life in harsh outdoor or laboratory conditions.