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The EzAntennaTracker system operates by sending a digital telemetry stream down one of the audio channels of an A/V link, via the EzOSD module. This telemetry stream contains information on the plane’s GPS location, and other information available to the EzOSD.
This telemetry stream then exits from the audio jack of the ground-based receiver, and can be used for various purposes
1) It can be simply recorded to the audio/video recorder, and ‘re-played’ through Google Earth™ to show the path that the model took during the flight/drive/sail. This case requires no additional hardware.
2) It can be recorded, as above, but used to find a lost plane in the event of a distant crash. The gps coordinates of the last packet sent should indicate roughly (or best case, exactly) where the plane crashed. Again, no additional hardware required.
3) It can be fed to an antenna tracker, which is driving a pan/tilt mount. This can aim a directional antenna at the plane during the entire flight, greatly reducing dropouts (and with the added bonus that the antenna points to where the plane landed/crashed in the event of a ‘problem’.