Spain, March 30 -- Indra has completed the development and certification testing of its new satellite communications terminal for submarines, the TSUB?40Ka, a more compact system with higher transmission speed that significantly boosts the operational capabilities of modern submarines.The terminal uses the Ka band which, unlike the traditional X band (for military use) or Ku band (for civilian use), allows the use of more compact antennas and offers higher transmission speeds, enabling broadband communications on platforms with severe space constraints, such as submarines.The use of Ka?band terminals also provides a significant operational advantage by combining the robustness of military standards (MIL?STD/STANAG) with advanced connectivit...