JT301-A Narrow-band Knapsack Wireless Video Transmission System, using the leading technology COFDM( 2M bandwidth ), and the foreign advanced diversity reception technology, for a higher sensitivity, a farther transmission distance.

Applications:
   Can be used for police, fire, traffic police, civil air defense emergency , urban management and law enforcement, environmental monitoring, fire emergency, flood control, emergency power, railway rescue, maritime law enforcement, maritime surveillance, terminal control, forest fire, oil security, military reconnaissance, television transmission and so on.

Advantages:
  Suitable for high-speed data transmission, the speed is above 2M bps, for the high quality video and audio transmission. Applicable to man - car, man - command center. For its small and light ,  can be installed on on-board and UAV for the high-definition image transmission. It transmits up to 60 km in the visual range. 

COFDM :
   COFDM has a good resistance to confront frequency selective fading , narrowband interference and the interference between the signal waveform. Through the joint coding of each sub-carrier,with a strong capability of against fading. In the single-carrier systems (such as digital microwave, spread spectrum microwave, etc.), a single fading or interference may cause failure of the whole communication link, but in COFDM, only a small part of the sub-carrier would be interfered. Meanwhile, this subchannel use error-correcting code to correct errors, to ensure low transmission error rate.

2M Narrow-band Wireless Video Transmission:
   This equipment strictly meets the requirements of transmission bandwidth of public security department. Under the same conditions, transmission distance is one time farther than 8M, and a stronger anti-interference. Useing the foreign advanced diversity reception technology, for high sensitivity, long transmission distance. In urban and such complex environments, it covers one time distance than the single antenna system covers .