Perfect example of rock Sixties youth'll broadcast (4,5)

I believe the answer is:

role model

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'perfect example' is the definition.
(a role model sets a good example)

I can't explain the rest of the clue.

(Other definitions for role model that I've seen before include "One's imitated" , "One worthy of imitation" , "example for kids" , "One imitated by others" , "Paragon" .)

I've seen this clue in The Telegraph.

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