Team from busy Cheshire station on the air (4)
I believe the answer is:
crew
'team' is the definition.
(I know that crew is a type of team)
'busy cheshire station on the air' is the wordplay.
'busy cheshire station' becomes 'Crewe' (Crewe is a railway town in Cheshire).
'on the air' shows a homophone (sound like).
'crewe' is a homophone of 'CREW'.
'from' is the link.
(Other definitions for crew that I've seen before include "Work party" , "eight > was sounding shrilly" , "Men on board" , "Sailors -- boasted" , "Hands" .)