In 1997, the Defense Department began its quest for the perfect family of radios: software-defined radios that, like computers, could be reprogrammed for different missions and could communicate with everything the US military used. Digital signal processing could adaptively use available radio spectrum based on the needs of the moment, turning soldiers, tanks, planes, and ships into nodes of a broadband radio-based network.The goal was to solve radio problems like this one in Afghanistan, detailed by the Center for Public Integrity in January 2012. Soldiers who watched an ambush forming on a ridge nearby found themselves limited by the hugely variable needs of their many radio systems:But the program meant to fix the mess, called the Joint Tactical Radio System (JTRS), instead became a massive 15-year software and hardware development mess of its own, involving five sub-programs and multiple multi-billion dollar contracts. It has been a financial disaster for the DOD. Billions were thrown away on technology that will never see the light of day, despite multiple heroic efforts to pull the project back from the brink of disaster.
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