These cable are used in wireless communication, broadcast and military equipments for transmission of radio frequency signals.Silver Plated Copper covered steel as inner conductor,PTFE dielectric,Silver Plated copper as braid wire, and FEP or PTFE as jacket.

Check some of the datas as below please:

RG142 , RG178 , RG179 , RG180 , RG187 , RG188 , RG195 , RG196 , RG302 , RG303 , RG304 , RG316 , RG393 , RG400