Broadcaster's prompt expected soon? (7)

I believe the answer is:

insight

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'broadcaster's prompt expected soon?' is the definition.
I can't tell whether this definition defines the answer.

'broadcaster's prompt' is the wordplay.
'broadcaster's' indicates a 'sounds like' (homophone) clue (how it might sound on a broadcast).
'prompt' becomes 'incite' (synonyms).
'incite' is a homophone of 'INSIGHT'.

Can you help me to learn more?

(Other definitions for insight that I've seen before include "Grasp" , "Clear understanding" , "famous Sunday Times team" , "Perspicacity" , "Things I have understanding of" .)

I've seen this clue in The Times.

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