Description
The 1-1/4″ variant is the “trunk line” of radiating cables. Because of its large diameter, it has the lowest longitudinal attenuation in the leaky feeder family. This allows RF signals to travel much further down the cable before requiring an inline amplifier or a second base station. The cable features precision-milled slots in the corrugated copper outer conductor, which act as a continuous antenna, providing a stable cylindrical radiation zone.
To meet safety requirements for public and industrial spaces, these cables are almost exclusively supplied with a Low Smoke Zero Halogen (LSZH) jacket. This ensures that in the event of a fire, the cable will not emit toxic fumes or dense smoke, which is a critical safety standard for metro and road tunnels.
Key Technical Advantages
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Unmatched Longitudinal Efficiency: Allows for the longest possible cable runs between active equipment, significantly reducing the total amount of hardware needed for a tunnel.
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Stable Coupling Loss: Engineered to provide a consistent signal level (coupling) between the cable and mobile devices, ensuring zero dropped calls or data lags.
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High-Power Capacity: Can handle the high output power of multi-operator 5G base stations, making it ideal for neutral host tunnel installations.
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Elite Shielding & Emission: While it “leaks” signal, the solid copper construction still provides excellent protection against external EMI and maintains a high Signal-to-Noise Ratio (SNR).
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Fire Safety Compliance: Equipped with non-corrosive, flame-retardant jackets that meet IEC and EN fire safety standards for underground transit.
Key Features
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Impedance: 50 Ohm (±2 Ohm).
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Outer Diameter: ~39.0mm to 40.0mm.
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Frequency Range: 75 MHz to 3.3 GHz.
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Outer Conductor: Slotted Corrugated Copper.
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Jacket: LSZH Fire-Retardant (Standard).
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Applications: Mainline Railway Tunnels, Highway Tunnels, and Large-Scale Mining.
🔹 Applications:
- High-capacity tunnel communication
- Large infrastructure RF systems
- Metro and railway networks
- DAS and IBS systems
- Underground communication
- Emergency response systems
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