Coaxial cable

Solid polyethylene insulated radio frequency cables are cables that transmit electromagnetic energy within the radio frequency range. Radio frequency cables are indispensable components in various radio communication systems and electronic equipment, and are widely used in wireless communication and broadcasting, television, radar, navigation, computers and instruments, etc. There are two commonly used types of RF coaxial cables: 50Ω and 75Ω RF coaxial cables. Rf coaxial cables with a characteristic impedance of 75Ω are often used in CATV networks, thus they are called CATV cables. Their transmission bandwidth can reach 1GHz. Currently, the transmission bandwidth of commonly used CATV cables is 750 MHZ.

Physical foamed polyethylene insulated coaxial cables for cable television systems are suitable for main lines, branch lines, user lines and other electronic devices used in cable television systems.

SYV-50、SYV-75：实芯聚乙烯绝缘聚氯乙烯护套射频同轴电缆

SYWV-75-5、SYWV-75-7、SYWV-75-9、SYWV-75-12：有线电视系统物理发泡聚乙烯绝缘同轴电缆

1、同轴电缆是一种专门设计用来传输视频信号，采用直接调制技术、以基带频率（约8MHz带宽）的形式传输，其频率损失、图像失真、图像衰减的幅度都比较小，能很好的完成传送视频信号的任务。一般采用专用的SYV-75Ω系列同轴电缆。有线电视系统常用型号的为SYWV-75-5（它对视频信号的无中继传输距离一般为300-500m）；距离较远时，需采用SYWV75-7、SYWV75-9甚至SYWV75-12的同轴电缆（在实际工程中，粗缆的无中继传输距离可达1km以上）。

2、使用环境条件：聚氯乙烯护套电缆的环境温度应为-25~+70℃，聚乙烯护套电缆的环境温度应为-40~+70℃；当温度为40±2℃时，环境的相对湿度应为90%~95%。

3、同时我们可根据客户的需求专门定制阻燃、防水、耐寒、耐油、抗紫外光老化等适用于多种工作场合环境的产品。