3C-2V  3C-2V is commonly marked on low cost coaxial cable used for domestic TV signals. It is one of the options of the Japanese cable standard JIS C 3501. Nominal loss at 100 MHz is 42 dB/km. With its narrow core it is similar to RG-59 cable; RG-6 coax cable is better shielded and has lower losses. JIS C 3501