Hi there... I've been installing cameras for over 2 years now but i havent tried installing long cable runs with coax and utp cables. Currently the longest coax cable run that i made was a 200m RG59-U (with power) and using a 18CH 20A Centralized PSU. Same with 4wire-UTP with power cable, using Passive Video Baluns, 150-200m cable runs.
Problem that I encountered frequently is voltage drop, especially when all cameras are long cable runs and using varifocal cameras or cameras high beam IRs that usually need more wattage. I was forced to install power adapters(12V 1A) for each cameras.
What system should I use especially long cable runs? Should I use long rang IP cameras but I haven't tried it since I think it needs to be in light of sight (the receiver and transmitter antennas)?