Aeronautical telemetry was supported by a standard set of tools for the last 40 years of the 20th century.  Some of these legacy tools are still in use today, but they do not come close to matching the performance available now.  New technologies, introduced in the past few years, have revolutionized the way telemetry is done, and the dramatically improved the quality of the flight test data thereby delivered.  This overview describes these technologies, and the leadership role that Quasonix has taken in their introduction.