... cable. low attenuation,low VSWR, high power rate 1-1/4" Aluminum Cable Consruction ItemMaterialDiameter(mm) Inner conductorCu- ... tube13.1 InsulationHigh Foaming PE31.7 Outer conductorAluminum-tape,longitudinal welded ... 4000MΩ.km VSWR800~1000MHz, ≤1.10 1700~2500MHz, ≤1.13 2500~3000MHz, ≤1.15 5~3000MHz, ≤1.15 FrequencyAttenuation(db/100m) ...