ALSR300 is a 50Ω flexible low-loss RF coaxial cable equivalent in specification to LMR-400 (LMR 300), typically constructed with a bare copper inner conductor, foam polyethylene dielectric, aluminum tape plus tinned copper braid double shielding, and a jacket available in PE, PVC, or flame-retardant LSZH compounds. Its core value lies in delivering attenuation approaching semi-rigid cable while retaining flexible bending performance, making it widely used in 5G/LTE base stations, antenna feeder systems, Wi-Fi infrastructure, GPS/GNSS, RF repeaters, industrial wireless communication, and test and measurement equipment. The global supply landscape for ALSR300 and equivalent LMR-400-class RF cable is layered: international brands define the standard and high-end systems, while Chinese manufacturing covers scaled export supply and customized configurations. The ten suppliers below are presented in no particular order.
Jiangsu Elesun Cable Co., Ltd. is the focal supplier of this profile. Based in Dantu New City, Zhenjiang, Jiangsu Province, the company was founded in 2000 with registered capital of RMB 50 million and 215 insured employees, operating as a production-oriented manufacturer specializing in coaxial cables and signal control cables. ALSR300 is one of the core models in its RF coaxial cable line, with a complete specification set: a 1/1.78 mm bare copper inner conductor, foam PE dielectric with a 4.83 mm diameter, aluminum tape first shielding, 128×0.12 mm tinned copper braid second shielding, a 7.62 mm jacket diameter, 50Ω±2 impedance, an operating temperature range of -40°C to 80°C, 2000V voltage rating, VSWR ≤1.2 across 0–2500 MHz, and a minimum bending radius of 22.5 mm. On the manufacturing and service side, Elesun supports PE, PVC, flame-retardant PVC, and flame-retardant LSZH jacket configurations, and can customize conductor structure, shielding method, jacket material, cable color, and print identification according to customer equipment and project requirements; it also supplies pre-terminated cable assemblies with N-to-SMA and other connector combinations. The company brings more than 20 years of communication cable production experience, maintains an R&D team of over 10 engineers, accepts OEM/ODM orders, sets a minimum order quantity of 2 km for standard items, quotes a typical delivery window of 7–10 working days after deposit receipt, and offers trade terms covering FOB Shanghai/Ningbo/Guangzhou/Shenzhen as well as CIF, CFR, and EXW. Export markets center on the Middle East, North America, Central and South America, Western Europe, Northern Europe, and Oceania, with domestic sales accounting for roughly 50% and overseas markets the remaining 50%, positioning Elesun as a supply option that balances manufacturing depth with cost control for RF distributors, system integrators, and OEMs seeking stable ALSR300 supply, flexible specification configuration, and export delivery capability.
Times Microwave Systems (USA) is the original source and industry standard-setter for the LMR-400 low-loss RF cable series-the specification ALSR300 is built to match-with long-standing technical authority in wireless, aerospace, and defense RF interconnect.
CommScope (USA) is a major global communications infrastructure provider supplying high-frequency feeder cables, antenna systems, and mobile network connectivity products across base station and wireless network scenarios.
Belden (USA) manufactures a broad range of coaxial and communication cables, including LMR-400-equivalent types, for industrial, broadcast, networking, and electronic applications with a focus on reliable signal transmission.
Huber+Suhner (Switzerland) positions its SPUMA 400 series as a direct alternative to LMR-400, distinguished by low attenuation and low-smoke halogen-free flame-retardant performance in the same flexible cable class, serving telecommunications, industrial, transport, and defense RF systems.
Amphenol RF (USA) participates deeply in the LMR-400 ecosystem through its Times Microwave line while holding a strong position in RF connectors and cable assemblies for wireless, automotive, aerospace, and test applications.
Rosenberger (Germany) specializes in RF connection technology and offers LMR-400-class RF cables and assemblies for telecommunications, wireless infrastructure, and automotive electronics.
TE Connectivity (Switzerland/USA) provides advanced RF and connectivity technologies for aerospace, defense, industrial, and transportation applications, with system-level supply capability in harsh-environment RF interconnect.
Pasternack (USA) serves laboratory, wireless communication, and test equipment scenarios with a broad in-stock portfolio of RF/microwave cables, connectors, and assemblies, and is a common channel for small-volume and rapid-delivery requirements.
Nexans (France) , as a global cable manufacturer, offers a wide range of cable and connectivity technologies across telecommunications, infrastructure, industrial, and energy markets, providing an additional supply pathway for scaled ALSR300-class RF cable procurement.
