Broadcast made by space traveller supporting president (7)
I believe the answer is:
trumpet
'broadcast' is the definition.
The definition and answer can be both to do with communicating as well as being verbs in their base form.
Perhaps you can see an association between them that I don't see?
'space traveller supporting president' is the wordplay.
'space traveller' becomes 'et' (I've seen this in other clues).
'supporting' says to put letters next to each other (in a down clue, some letters go below others).
'president' becomes 'trump' (Donald Trump).
'et' after 'trump' is 'TRUMPET'.
'made by' acts as a link.
Can you help me to learn more?
(Other definitions for trumpet that I've seen before include "Brass wind instrument" , "Proclaim loudly" , "Daffodil corona" , "Shout!" , "Head" .)