Letters to be sent from remote station? (7)
I believe the answer is:
outpost
'remote station?' is the definition.
'outpost' can be an answer for 'station?' (outpost is a kind of station). I am not certain of the 'remote' bit.
'letters to be sent' is the wordplay.
'letters' becomes 'post' (letters in the mail or post).
'to' says to put letters next to each other (I've seen this in other clues).
'be sent' becomes 'out' (I can't explain this - if you can you should believe this answer much more).
'post' put after 'out' is 'OUTPOST'.
'from' acts as a link.
Can you help me to learn more?
(Other definitions for outpost that I've seen before include "Remote branch" , "Remote part of the country" , "isolated stronghold" , "Distant office, settlement" , "Remote military camp" .)