Sets radio controls for minor planets (9)
I believe the answer is:
asteroids
'minor planets' is the definition.
('asteroid' can be a synonym of 'minor planet')
'sets radio controls' is the wordplay.
'controls' indicates anagramming the letters (I've seen 'control' mean this).
'sets'+'radio'='setsradio'
'setsradio' with letters rearranged gives 'ASTEROIDS'.
'for' acts as a link.
(Other definitions for asteroids that I've seen before include "lumps of rock" , "Small planets orbiting the sun" , "Heavenly bodies" , "Do satires address small planets?" , "Small celestial bodies that move around the sun" .)