Terrestrial Trunked Radio (TETRA) System Market by Component (Hardware and Software), Modes of Operation (Trunked Mode Operation (TMO) and Direct Mode Operation (DMO)), and Device (Portable and Vehicular), and End User (Industrial, Transportation, Utilities, Military & Defense, Government & Public Safety, Commercial, and Others): Global Opportunity Analysis and Industry Forecast, 2021-2030. Terrestrial trunked radio (TETRA) system …