SYMAIR1
https://www.symair.com/products/low-loss-high-power-air-dielectric-rf-cables/
SYMAIR Low Loss High Power Air Dielectric RF Cables are engineered to meet the demanding requirements of high-performance RF applications. These cables are designed to minimize signal loss and handle high power transmission, ensuring exceptional signal integrity and reliability across various applications. The air dielectric construction significantly reduces dielectric losses, enhancing transmission efficiency and making these cables ideal for high-frequency and long-distance transmissions.
What is an air cable?
SYMAIR air cables are coaxial cables where the insulation between the inner and outer conductors is air, with the inner conductor supported by a spiral of insulating solid media. Air-insulated cables are typically used for high-power radio frequency (RF) transmissions. Based on the outer conductor shape, coaxial cables are categorized as corrugated or rigid lines. Generally, corrugated cables offer superior flexibility and reliability, with a better bending radius than rigid lines. Consequently, the industry predominantly uses corrugated outer conductor coaxial cables. Depending on the outer conductor material, transmission cables primarily fall into two categories: copper feeders and aluminum feeders. Aluminum cables offer a cost advantage due to smaller price fluctuations compared to international copper prices. Since the inner conductor of aluminum cables still uses copper as the transmission medium, their electrical performance matches that of copper outer conductor cables, and telecom operators are increasingly accepting this new feeder type.