75 Ohm

A data transfer cable comes with a difference in resistance, expressed in the impedance of the cable, making some cables a better fit for a specific application. Ranging from cables that are ideal for only transmitting signals (one way) and other cables that are the best pick for the transmission of digital signals.  

Coax cables with a 75Ω impedance are highly suitable for transmitting video signals. The cables have an advantage in flexibility and low loss characteristics.