Lofty antenna (6)
I believe the answer is:
I believe this clue is a double definition.
'lofty' is the first definition.
(I've seen this in another clue)
'antenna' is the second definition.
(Other definitions for aerial that I've seen before include "Device for radio transmissions" , "What may receive" , "Antenna; of the air" , "Rod or antenna for receiving signals" , "Antenna for attracting signals" .)