LCX42(1-5/8″)R同轴电缆结构内导体螺纹铜管Φ17.4mm绝缘发泡PEΦ43.0mm外导体搭接铜箔Φ43.8mm护套PE/低烟无卤Φ48.3mm电气和物理性能特性阻抗50&plu***n;3Ohm标称电容76pF/m传播速度88%绝缘电阻>5000Mohm.Km内导体电阻0.85Ohm/Km外导体电阻1.0Ohm/Km安装温度范围衰减频率(MHZ)衰减(DB/100M)衰减(DB/100FT)750.830.251500.950.294501.900.588002.800.859003.200.98)