Doubt you will hear it unless you are close to your drone. If you are at a height of say 200 ft and 400 ft distance all you will see is a nearmiss, if you're lucky, and your drone plummeting to earth.
Doubt you will hear it unless you are close to your drone. If you are at a height of say 200 ft and 400 ft distance all you will see is a nearmiss, if you're lucky, and your drone plummeting to earth.