50ohm 1-5/8" RF aluminum cable, the same characteristics as RF coaxial ... cable. low attenuation,low VSWR, high power rate 1-5/8" Aluminum Cable Consruction ItemMaterialDiameter(mm) Inner conductorCu-tube17.3 ... 13 2500~3000MHz, ≤1.15 5~3000MHz, ≤1.15 FrequencyAttenuation(db/100m)Average power(kw) 1.591.597.46 800MHZ2.295 ... G.W500meter/drum2000*2000*700mm410kgs/drum610kgs/drum 1-5/8" Aluminum cable