1-1/4” Feeder Cable

Description

The 1-1/4″ feeder is engineered to carry massive amounts of RF energy over hundreds of feet with negligible loss. Its large surface area and high-expansion foam polyethylene (PE) dielectric allow it to maintain signal integrity that smaller cables simply cannot match. The solid corrugated copper outer conductor ensures shielding effectiveness of >120 dB, making it immune to the high-interference environments typical of co-located carrier towers.

Because of its significant diameter and weight, this cable is less flexible and requires specialized heavy-duty hoisting grips and hangers for installation. It is almost exclusively jacketed in UV-resistant Black PE to ensure a 20+ year lifespan in extreme outdoor environments, protecting the internal components from moisture and oxidation.

Key Technical Advantages

• Ultra-Low Attenuation: One of the most efficient cables available, losing as little as ~2.0 – 2.5 dB per 100 meters at 900 MHz.

• Extreme Power Handling: Capable of managing peak power ratings up to ~150 – 180 kW, ideal for high-power broadcast transmitters and multi-operator cell sites.

• Low PIM Architecture: The solid corrugated construction provides the exceptionally low Passive Intermodulation (PIM) levels required to maintain high data throughput in 5G networks.

• Massive Structural Strength: Built to withstand high wind loads, ice accumulation, and the mechanical stresses of being suspended hundreds of feet in the air.

• Broad Compatibility: Works with specialized large-scale N-Type, 7/16 DIN, and 4.3-10 connectors designed for 1-1/4″ corrugated cable.

Key Features

• Impedance: 50 Ohm (±1 Ohm).

• Outer Diameter: ~39.0mm to 40.0mm.

• Frequency Range: DC to ~3.8 GHz.

• Outer Conductor: Corrugated Copper Tube.

• Bending Radius: ~200mm (Single) / ~380mm (Repeated).

• Applications: Main Trunk Lines for Macro Sites, Broadcast FM/TV, and Military Radar.

🔹 Applications:

• High-capacity RF transmission systems
• Telecom backbone networks
• Antenna feeder lines for macro cells
• Broadcast transmission systems
• Outdoor RF installations
• High-frequency communication