If you would rather use Cat5E instead of RG59 cable, it’s likely that somewhere along the way you will need a passive video balun. Security Camera King carries a full line of baluns both active and passive. Passive video baluns help prevent the degradation of the radio frequency signal over cable.
A balun is really a specific type of transformer that can convert electrical signals that are balance about ground (also known as differential) to signals that are unbalanced (single ended) and vice versa. The name “Balun” comes from two words, BAL(ance) and UN(balance).