... attenuation,low VSWR, high power rate 1-1/4" Aluminum Cable Consruction ItemMaterialDiameter(mm) Inner conductorCu-tube13.1 InsulationHigh Foaming PE31.7 Outer conductorAluminum ... km)4000MΩ.km VSWR800~1000MHz, ≤1.10 1700~2500MHz, ≤1.13 2500~3000MHz, ≤1.15 5~3000MHz, ≤1.15 FrequencyAttenuation(db/100m)Average ... LengthsizeN.W G.W500meter/drum1650*1650*700mm320kgs/drum480kgs/drum 1-1/4" Aluminum cable