The TV line is a cable that transmits a video signal (VIDEO) and can be used as a signal transmission for the monitoring system.

General model: SYV75-X (X stands for its outer diameter of insulation 3mm/5mm, the larger the number, the thicker the wire diameter) SYV S---coaxial RF cable, Y---polyethylene, V---polychlorine Ethylene.75 indicates characteristic impedance. The video line is 75-3 (100 meters). The transmission distance of 75-5 (300 meters) can work normally. The transmission distance of 75-7 (500-800 meters) can work normally. The transmission distance from 75-9 (1000-1500 m) can work normally.
The commonly used model is generally SYV75-5. The same manufacturer may also provide products at different price points. The specific difference is whether the copper used is pure copper or copper clad aluminum, or the number of twisted copper cores, such as: 96 series ( Refers to 96 thin copper core braids, 128 series, etc., the more the number, the better the shielding performance, so this should be paid attention to when purchasing products.
  TV line classification
  TV cable, TV production line, CCTV cable, TV signal cable
  TV line function
  1. High quality image reception
  2, the transmission channel is increased, the program content is rich
  (1) Enlarge the bandwidth of the transmission system and increase the cutoff frequency of the network.
  (2) Adopt adjacent channel transmission technology.
  (3) Using the spare space of the radio and television channels, additional cable TV channels will be added.
  3. The cable television broadcasting system is a low-cost broadcast television transmission coverage system.
  4, two-way transmission, a variety of uses.