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Material & Craft: 57.15mm solid corrugated copper outer conductor with CCA core
Technical Advantage: Ultra-low attenuation (2.4dB/100m @900MHz) & 89% velocity
Performance: Massive 70kW peak power handling with >90dB RF shielding
The 2-1/4" corrugated feeder cable engineered by Zhenjiang Worldpeak Communication Co., Ltd. is an ultra-low-attenuation 50 ohm feeder cable designed for demanding radio frequency infrastructure. Built with a 57.15 mm annular corrugated copper outer conductor, a 50.0 mm closed-cell foam PE dielectric, and a 24.0 mm copper-clad aluminum center conductor, this heavy-duty 2-1/4" corrugated feeder cable delivers exceptional power capacity up to 70 kW peak power. Encapsulated in a robust 62.0 mm Black PE jacket, this premium RF feeder cable maintains an 89% velocity of propagation while ensuring superior mechanical durability and total signal protection for base stations, broadcast masts, and long vertical tower runs.
In large-scale telecommunications networks and high-power broadcasting infrastructures, signal loss directly translates to reduced transmission range and increased energy consumption. The 2-1/4" corrugated feeder cable manufactured by Zhenjiang Worldpeak Communication Co., Ltd. provides a heavy-duty RF feeder cable solution engineered specifically to solve high-attenuation challenges in long outdoor transmission runs.
Unlike standard flexible coaxial cables utilizing braided wires or foil shielding, this specialized 50 ohm feeder cable incorporates a continuous, solid annular corrugated copper outer tube. This structural shell acts as a 360-degree electromagnetic barrier delivering shielding effectiveness greater than 90 dB. It completely prevents RF energy leakage and eliminates external radio frequency interference, ensuring continuous, stable impedance along the entire line.
Internally, the 2-1/4" corrugated feeder cable pairs a 50.0 mm high-expansion closed-cell foam polyethylene (PE) dielectric with a 24.0 mm copper-clad aluminum center conductor. This construction maintains outstanding structural uniformity, ensuring that the 50 ohm feeder cable achieves low attenuation numbers (2.4 dB/100m at 900 MHz and 4.2 dB/100m at 2.4 GHz). The closed-cell foam matrix acts as a physical barrier against longitudinal water migration, ensuring that damp weather or accidental outer jacket punctures do not degrade internal electrical transmission performance. Protected by an 8.1 mm thick black PE outer jacket (62.0 mm total outer diameter), this corrugated copper feeder cable resists UV radiation, environmental stress cracking, and extreme ambient temperatures from -40°C to +85°C.
Seamless Corrugated Copper Outer Conductor: The 57.15 mm solid annular copper tube guarantees complete 100% RF shielding (>90 dB) and high structural stability.
Ultra-Low Signal Attenuation: Engineered specifically for long-distance runs, delivering minimal loss ratings of 2.4 dB/100m at 900 MHz and 4.2 dB/100m at 2.4 GHz.
High Peak Power Rating: Capable of handling up to 70 kW peak power and voltage withstand thresholds of 10000V DC for broadcast and commercial base stations.
Moisture-Proof Dielectric Core: The 50.0 mm closed-cell foam PE dielectric achieves an 89% velocity of propagation while blocking longitudinal water movement.
Optimized Center Conductor Design: The 24.0 mm copper-clad aluminum inner conductor optimizes skin effect efficiency while reducing physical weight to 2.5 kg/m.
Heavy-Duty Weatherproof Jacket: The 62.0 mm black PE outer jacket provides UV protection and environmental durability for outdoor deployments.
When transmitting radio signals over vertical runs exceeding 50 or 100 meters, smaller feeder lines like 7/8" or 1-5/8" incur significant signal loss, generating unwanted thermal heat and reducing coverage. The 2-1/4" corrugated feeder cable from Zhenjiang Worldpeak Communication Co., Ltd. solves this through its large physical volume and solid copper conductor surface area. By reducing DC loop resistance down to approximately 0.5 ohm/km, this RF feeder cable allows operators to send higher transmitter energy to the antenna top with minimal insertion loss.
Radio frequency currents travel predominantly along the outer boundary layer of an electrical conductor—a physical process known as the skin effect. By applying a high-purity copper layer over a lightweight aluminum core, Zhenjiang Worldpeak Communication Co., Ltd. achieves high conductivity in the 24.0 mm center conductor without adding unnecessary dead weight. This enables a total cable weight of 2.5 kg/m, keeping mechanical tension within safe limits for tower climbing legs, mounting hardware, and hoist grips.
| Parameter | Specification | Notes & Value |
| Impedance | 50 ohm | Standard nominal value |
| Primary Keyword | 2-1/4" corrugated feeder cable | Low-loss RF transmission line |
| Inner Conductor | 24.0 mm Copper-Clad Aluminum | Skin-effect optimized core |
| Dielectric Material | 50.0 mm Foam PE | Closed-cell foam PE structure |
| Outer Conductor | 57.15 mm Corrugated Copper | Annular solid corrugated copper |
| Outer Jacket | 62.0 mm Black PE | UV-resistant polyethylene sheath |
| Velocity of Propagation | 89% | Reference propagation speed |
| Capacitance | 73.0 pF/m | Dielectric capacitance index |
| DC Loop Resistance | 0.5 ohm/km | Exceptionally low DC loop resistance |
| Shielding Effectiveness | > 90 dB | Solid tube electromagnetic isolation |
| Voltage Withstand | 10000V DC | High dielectric strength threshold |
| Peak Power Rating | 70 kW | High power transmitter threshold |
| Minimum Bend Radius | 350 mm | Single-bend installation radius |
| Cable Weight | 2.5 kg/m | Nominal cable weight per meter |
| Operating Temperature | -40°C to +85°C | Extreme environmental operational range |
| Attenuation @ 900 MHz | 2.4 dB/100m | Nominal loss at cellular frequencies |
| Attenuation @ 2.4 GHz | 4.2 dB/100m | Nominal loss at microwave bands |
| Compatible Connectors | EIA Flange, 7/16 DIN, HN | Standard industry RF interfaces |
Primary heavy-duty vertical transmission line for macro cell sites and private radio networks. The 2-1/4" corrugated feeder cable supplied by Zhenjiang Worldpeak Communication Co., Ltd. connects base transceiver shelter units directly to high-altitude tower-top antennas.
Ideal for FM radio, VHF broadcast, and digital television transmission lines where high power levels up to 70 kW must travel up long vertical masts with minimal signal loss.
Serves as the primary main trunk riser cable for wide-area Distributed Antenna Systems (DAS) in major sports stadiums, transit hubs, and high-rise commercial complexes where high-capacity multi-operator signals are distributed across multiple floors.
The continuous corrugated copper shield and weather-proof PE jacket allow this 50 ohm feeder cable to operate safely in corrosive salt-spray environments on maritime vessels and offshore oil platforms.
Purchasing the 2-1/4" corrugated feeder cable from Zhenjiang Worldpeak Communication Co., Ltd. gives telecommunication operators, tower companies, and system integrators distinct financial and operational advantages:
Lower Total Cost of Ownership (TCO): High physical durability and closed-cell moisture blocking prevent signal degradation, significantly reducing emergency maintenance calls and cable replacements.
Maximized Transmitter Power Efficiency: Ultra-low attenuation performance minimizes power waste, lowering ongoing power costs for high-wattage broadcast transmitters over decades of continuous operation.
Flexible OEM & B2B Customization: Zhenjiang Worldpeak Communication Co., Ltd. provides project-specific cable lengths, custom outer jacket printing, heavy-duty wooden reel packaging, and pre-terminated cable assemblies fitted with tested EIA Flange, 7/16 DIN, or HN connectors.
Strict Quality Inspection: Every batch of 2-1/4" corrugated feeder cable manufactured by Zhenjiang Worldpeak Communication Co., Ltd. undergoes comprehensive VSWR, return loss, and mechanical continuity testing prior to shipment.
Q: How does this 2-1/4" corrugated feeder cable compare to flexible braided coaxial cables like LMR-series?
A: Unlike braided coaxial cables that rely on foil-and-wire shields, this 2-1/4" corrugated feeder cable uses a continuous, solid corrugated copper outer conductor. This solid tube provides far lower attenuation, higher power capacity (70 kW peak), superior shielding (>90 dB), and much greater outdoor stability over decades of use.
Q: What critical installation practices should be followed for this feeder cable?
A: Installers must maintain a minimum bend radius of 350 mm to avoid kinking the solid copper tube. Additionally, because the cable weighs 2.5 kg/m, vertical tower runs require properly spaced cable support grips so that cable weight is not transferred directly to the antenna connector interface.
Q: Can Zhenjiang Worldpeak Communication Co., Ltd. provide pre-terminated assemblies?
A: Yes. Zhenjiang Worldpeak Communication Co., Ltd. manufactures factory-terminated, factory-tested assemblies fitted with EIA Flange, 7/16 DIN, or HN connectors to accelerate field deployment and ensure weather-tight integrity.
