How to send a video signal over very long distances (hundreds of meters and more)?
In order to transmit a video signal over a very long distance, three options are available: The twisted pair solution. The fiber optic solution. The RF / Microwave solution. Each solution has advantages and disadvantages, and the user should check and weigh them for his needs: The twisted pair solution: The advantages of the twisted pair solution are simplicity and very low cost. All that is needed is a twisted pair transmitter, a twisted pair receiver and twisted pair wire of the requisite length. When using a good quality system, this solution can transmit video (and sometimes audio signals as well) over distances ranging from 300 meters up to 1 km. Black and white video (for security) can be transmitted up to 3 km using this system. The main disadvantages are fairly quick deterioration of signal quality with distance, and susceptibility to electromagnetic and electrostatic damage (lightning, strong electromagnetic fields, etc.) The Fiber optic solution: Like the twisted pair solutio