A new note delivered for receiver (7)
I believe the answer is:
antenna
'for receiver' is the definition.
(I've seen this before)
'a new note delivered' is the wordplay.
I cannot really understand how this works, but
'a' could be 'an' and 'an' is present in the answer.
'new' could be 'n' (common abbreviation eg NT for New Testament) and 'n' is located in the answer.
'note' could be 'te' (musical note) and 'te' is present in the answer.
The remaining letters 'na' is a valid word which might be clued in a way I don't see.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for antenna that I've seen before include "could send out a message" , "What detects signals" , "Insect's sensory appendage" , "Transmitting aerial" , "Aerial - insect feeler" .)