Brave article in vital broadcast (7)
I believe the answer is:
valiant
'brave' is the definition.
('valiant' can be similar in meaning to 'brave')
'article in vital broadcast' is the wordplay.
'article' becomes 'an' (indefinite article).
'in' means one lot of letters goes inside another.
'broadcast' is an anagram indicator.
'vital' with letters rearranged gives 'valit'.
'an' going into 'valit' is 'VALIANT'.
(Other definitions for valiant that I've seen before include "Stout" , "Courageous, determined" , "Heroic" , "Showing courage" , "Stout-hearted" .)