Static on the radio provides material for writers (10)
I believe the answer is:
stationery
'material for writers' is the definition.
(stationery means writing materials)
'static on the radio' is the wordplay.
'static' becomes 'stationary' (I've seen this before).
'on the radio' shows a homophone (sound like).
'stationary' sounds like 'STATIONERY'.
'provides' is the link.
(Other definitions for stationery that I've seen before include "Treasury tags, for instance" , "Writing paper, etc" , "Writer's needs" , "Files etc" , "Pens, pencils, paper etc" .)