Allied Command Europe Highband no relation NATO Joint Civil/Military Frequency Agreement (NJFA)
Allied Command Europe Highband, better known as ACE High, was a fixed service NATO radiocommunication and early warning system dating back to 1956. After extensive testing ACE High was accepted by NATO to become operational in 1964/1965.
The frequency supportability and frequency assignments were profited in accordance with the NATO Joint Civil/Military Frequency Agreement (NJFA).  The system was designed to be a combined  UHF troposcatter/microwave radio system, providing long-range communications in the form of telephone, telegraph and data traffic in the NATO chain of command.Its combined services produced over 200 channels and equipment was in place to multiplex them to contain up to 12 different calls each. There used to be 49 troposcatter links augmented by 40 Line Of Sight Microwave terrestrial stations, located in nine different NATO countries from northern Norway through central Europe to eastern Turkey. The transmitters broadcast at 832.56 - 959.28 MHz producing an average transmitting power of 10 kilowatts.
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