结构内导体铜包铝Φ6.68mm绝缘发泡PEΦ25.58mm外导体焊接铝管Φ27.46mm护套PE/低烟无卤Φ31.12mm自承单元可选电气和物理性能特性阻抗75&plu***n;5Ohm标称电容50pF/m传播速度87%绝缘电阻>5000Mohm.Km内导体电阻0.76Ohm/Km外导体电阻0.61Ohm/Km安装温度范围-40°C-+85°C工作温度范围-40°C-+85°C屏蔽有效性135dB电缆重量(大约)506kg/km衰减频率(MHZ)衰减(DB/100M)衰减(DB/100FT)550.230.07550.760.232501.770.543001.940.593502.130.654002.300.704502.460.755002.620.805502.760.846002.960.90)