Our silly broadcast is misleading (8)
I believe the answer is:
illusory
'is misleading' is the definition.
(I've seen this in another clue)
'our silly broadcast' is the wordplay.
'broadcast' indicates an anagram (letters scattered or cast around).
'our'+'silly'='oursilly'
'oursilly' is an anagram of 'ILLUSORY'.
(Other definitions for illusory that I've seen before include "Unreal, fanciful" , "in the imagination" , "dreamed up" , "Deceptive" , "false" .)