JTIDS

JTIDS/MIDS was initially developed for the US forces, but was later made available to the NATO states and some states in Europe, Asia, the pacific area and South America, where JTIDS/MIDS is still in use today. Since ITU allocated the frequency range between 960 MHz to 1215 MHz for ICAO systems (International Civil Aviation Organization) of the Aeronautical Radio Navigation Service (ARNS), and since no international allocation for the use of JTIDS/MIDS was made, operation of JTIDS/MIDS is limited to Non Interference base use to the Primary Services to which the frequency band between 960 MHz to 1215 MHz has been allocated on a worldwide basis. Operation within a state is subject to limitations and restrictions, which have to be defined in a JTIDS/MIDS Frequency Clearance Agreement (FCA) by each state before JTIDS/MIDS can be operated in that state. While FCA are similar in most states, the can significantly differ depending on local systems in use and density of equipment, and differ e.g. in maximum TSDF or EIRP.