Cable-UTP : 24 gauge or lower solid copper twisted pair wire impedance: 100ohm at 1MHz Max. capacitance :20pf/ft Attenuation: 6.6dB/1000ft at 1MHz Cable-BNC: 75ohm at 1MHz(RG59/U) Max. 25ft. of coax allowed per end to end link Min. distance: Cat.5 2230ft (680 Meter) Monochrome: Cat.5 2550ft (780 Meter)