Scientists have found that the movement of aircraft through these radio waves is visible in the data recorded by what is known as the Weak Signal Propagation Reporter Network, or WSPRnet, better known as "whispernet." The idea of using amateur radio signals as a passive radar system to detect and track aircraft was first proposed in a NATO paper written by the Finnish Air Defence Academy in 2016.
Using whispernet data, Godfrey and his co-authors were able to ascertain that the plane banked south into the Indian Ocean and flew for seven hours 35 minutes before it ran out of fuel and then glided for 11 minutes before subsequently crashing.
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Tom Crawford, W3TMC
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