Wireless pioneer from Minorca (7)
I believe the answer is:
marconi
'wireless pioneer' is the definition.
(I've seen this before)
'from minorca' is the wordplay.
'from' is an anagram indicator (from the letters).
'minorca' is an anagram of 'MARCONI'.
(Other definitions for marconi that I've seen before include "Inventor of radio-telegraphy" , "The father of radio" , "Radio engineer" , "Pioneer of wireless" , "Italian inventor of radio" .)