ITU-R M.2122-0 PDF

This Recommendation provides technical and operational characteristics for aeronautical mobile telemetry (AMT) operated in countries of Region 1 (except in Algeria, Saudi Arabia, Bahrain, Egypt, United Arab Emirates, Jordan, Kuwait, Lebanon, Morocco, Oman, Qatar, Syrian Arab Republic, Sudan, South Sudan and Tunisia) and in Brazil in the frequency range 5 150-5 250 MHz in accordance with RR No. 5.446C which recognizes an allocation to the aeronautical mobile service on a primary basis, limited to aeronautical telemetry transmissions from aircraft stations.