Broadcast appearance (3)
I believe the answer is:
air
I believe this clue is a double definition.
'broadcast' is the first definition.
(to air on TV)
'appearance' is the second definition.
(both can mean an impression or character)
(Other definitions for air that I've seen before include "Simple melody's" , "Song; ventilate" , "strain" , "A tune or attitude" , "- brick; - bed; - brush" .)