Radio or TV adjusted (3)

I believe the answer is:

set

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'radio or tv' is the definition.
(I know that radio receiver is a type of set)

I don't understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for set that I've seen before include "Congeal" , "See 16 Down" , "exclusive party" , "Group; unchanging" , "Put down the tennis group" .)

I've seen this clue in The Times.

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