On radio, a youth contributing to panto (7)
I believe the answer is:
aladdin
'panto' is the definition.
(Aladdin is a pantomime)
'on radio a youth' is the wordplay.
'on' is a charade indicator (letters next to each other).
'radio' becomes 'din' (I can't justify this - if you can you should give a lot more credence to this answer).
'youth' becomes 'lad' (lad means a young man).
'a'+'lad'='alad'
'din' put after 'alad' is 'ALADDIN'.
'contributing to' acts as a link.
Can you help me to learn more?
(Other definitions for aladdin that I've seen before include "Panto lead role" , "Magic lamp man" , "pantomime role" , "Panto character with magic lamp (7)" , "PANTO (part title)" .)