College representative broadcast without distortion (10)

I believe the answer is:

unimpaired

'without distortion' is the definition.
(unimpaired can mean pure or undistorted)

'college representative broadcast' is the wordplay.
'college' becomes 'uni' (short for university).
'representative' becomes 'mp' (Member of Parliament, a representative).
'broadcast' becomes 'aired' (synonyms).
'uni'+'mp'+'aired'='UNIMPAIRED'

(Other definitions for unimpaired that I've seen before include "Not weakened or damaged" , "none the worse for it?" .)

I've seen this clue in The Times.

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