This lesson gives an example and general anecdotes regarding radio operation for a manned aircraft. Please consider the points that are discussed with reference to manned and unmanned aircraft operations, and the implications that these points may have if you are trying to communicate to a manned aircraft during an RPA operation.
Some of the discussion points are explicitly relevant to operating a aviation radio in a manned aircraft, and may not be directly relevant to the operation of a hand-held aviation radio. It is important to remember that radio communication is a complex task. It is important to remember that other radio operators, especially manned pilots, may be busy flying their own aircraft.
So keep in mind, just because you make a radio transmission does not mean that you can assume that it has been received and understood! This is why we use correct radio procedures at all times!