Based on the part number provided, the **L4AS-261-R** is a high-performance RF (Radio Frequency) coaxial jumper cable assembly, typically manufactured by **CommScope (Andrew)**. These cables are critical components in telecommunications infrastructure. --- ## 1. Technical Specifications The L4AS-261-R is part of the **SureFlex®** Premium line, known for high reliability and low signal interference. | Feature | Specification | | :--- | :--- | | **Product Type** | SureFlex® Premium Jumper | | **Cable Family** | AL4RPV-50 (1/2" Plenum Rated) | | **Connector A** | 7-16 DIN Male | | **Connector B** | 7-16 DIN Male Right Angle | | **Impedance** | 50 Ohm | | **Frequency Band** | 0 – 6000 MHz | | **Length** | Typically 2.61 meters (or custom per suffix) | --- ## 2. Key Electronic Characteristics ### Passive Intermodulation (PIM) This cable is "3rd Order IMD" rated, usually at **-116 dBm** or better. Low PIM is essential in cellular networks to prevent self-interference between transmitted and received signals, ensuring high data speeds. ### VSWR and Return Loss The assembly is designed to minimize signal reflection. Typical values are: * **698–2700 MHz:** VSWR < 1.065 / Return Loss > 30 dB * **3400–3800 MHz:** VSWR < 1.222 / Return Loss > 20 dB ### Shielding and Conductivity * **Inner Conductor:** Copper-clad aluminum or copper. * **Outer Conductor:** Corrugated aluminum or copper (providing 100% RF shielding). * **Dielectric:** Low-loss foam polyethylene. --- ## 3. Physical & Environmental Construction The "R" suffix often denotes specific physical configurations (like a Right-Angle connector) or RoHS compliance. * **Right Angle Connector:** The "R" in the suffix usually refers to the **7-16 DIN Male Right Angle** connector on one end, which is used in tight spaces inside cabinets or behind antennas. * **Jacket:** Usually a fire-retardant, halogen-free jacket (Plenum or LSZH rated) suitable for indoor or outdoor use. * **Waterproofing:** These cables are generally rated **IP68** when mated, protecting the electronic connection from moisture and dust. --- ## 4. Typical Applications 1. **Macro Cells:** Connecting Remote Radio Units (RRUs) to antennas on towers. 2. **Distributed Antenna Systems (DAS):** Used in building signal boosters where plenum-rated cabling is required. 3. **Small Cells:** Providing high-frequency connectivity in dense urban environments.