I have a radio telemetry kit on my hexacopter and am trying to mount a FPV camera on it..

my question is if I have minumOSD then do I need the radio telemetry kit??

what is main difference between??

any help??

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OSD display flight info to FPV or video downlink. Telemetry sends flight data to you base station, which is usually your laptop in the field. Always use telemetry, helps you find stuff after crashing. LOL. OSD is optional, very handy if you fly FPV.

Also the 3DR telemetry radio allows two way communication, so you can update waypoints and configuration parameters from a laptop.

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