The **L4AS-2A2-R** is a high-performance, low-loss RF (Radio Frequency) jumper cable assembly, typically manufactured by **CommScope (Andrew)**. It is part of the **SureFlex®** Premium line, designed specifically for telecommunications and wireless infrastructure. --- ## 1. Technical Specifications The part number follows a specific nomenclature that defines its electronic and physical characteristics: | Feature | Specification | | :--- | :--- | | **Cable Type** | LDF4-50A (1/2" Foam Coaxial) | | **Connector A** | 7-16 DIN Male | | **Connector B** | 7-16 DIN Male | | **Impedance** | 50 Ohm | | **Frequency Band** | 0 – 8800 MHz (Optimized for LTE/5G bands) | | **PIM (Passive Intermodulation)** | -116 dBm / -159 dBc (Static) | --- ## 2. Key Electronic Components ### A. Coaxial Cable (LDF4-50A) The core of the assembly is the **1/2 inch corrugated copper coaxial cable**. - **Inner Conductor:** Copper-clad aluminum wire. - **Dielectric:** Foam polyethylene (PE) which provides low attenuation. - **Outer Conductor:** Corrugated copper, offering excellent shielding and flexibility. ### B. Connectors (7-16 DIN) The "2A2" in the part number signifies that both ends are **7-16 DIN Male** connectors. - These are used because they are robust and have superior power-handling capabilities compared to N-type connectors. - They are specifically designed to minimize **PIM**, which is critical for maintaining high data rates in cellular networks. ### C. SureFlex® Technology The "-R" suffix often denotes a specific revision or assembly style (like a lead-free or RoHS compliant version). The "SureFlex" manufacturing process involves a **soldered inner and outer conductor** interface, which ensures: 1. **Stable VSWR:** Low Voltage Standing Wave Ratio across all frequencies. 2. **Weatherproofing:** Factory-molded boots protect the electronic junctions from moisture. --- ## 3. Performance Metrics ### VSWR and Return Loss | Frequency Band | VSWR | Return Loss (dB) | | :--- | :--- | :--- | | 698–960 MHz | 1.065 | 30.0 | | 1700–2200 MHz | 1.065 | 30.0 | | 2200–2700 MHz | 1.106 | 26.0 | ### Applications * Connecting **Base Transceiver Stations (BTS)** to Antennas. * **Remote Radio Heads (RRH)** connectivity. * Distributed Antenna Systems (DAS). ---