HF again used for broadcast: Kabul’s ready (7)
I believe the answer is:
afghani
'broadcast kabul's ready' is the definition.
The definition and answer can be both related to communication as well as being singular nouns.
Perhaps there's an association between them I don't understand?
'hf again used' is the wordplay.
'used' indicates anagramming the letters.
'hf'+'again'='hfagain'
'hfagain' with letters rearranged gives 'AFGHANI'.
'for' is the link.
Can you help me to learn more?
(Other definitions for afghani that I've seen before include "hundred puls" , "Native of Kabul, say" , "ready for Kabul?" , "One coming from Kabul" , "Currency in Kabul" .)