Set-up receiving, unusually, live European broadcast (8)
I believe the answer is:
televise
'broadcast' is the definition.
(televising is a kind of broadcasting)
'set-up receiving unusually live european' is the wordplay.
'up' says the letters should be written in reverse (in down clue: letters go upwards).
'receiving' indicates putting letters inside.
'unusually' indicates an anagram.
'european' becomes 'e' (abbreviation e.g. EU).
'set' reversed gives 'tes'.
'live' is an anagram of 'levi'.
'tes' enclosing 'levi' is 'televis'.
'televis'+'e'='TELEVISE'
(Other definitions for televise that I've seen before include "Broadcast visual images" , "Screen" , "Air, broadcast" , "Show" , "Put on TV (S, not Z)" .)