Reception aid
'reception aid' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for antenna that I've seen before include "receiver" , "Transmitting aerial" , "could send out a message" , "connected to 41?" , "Insect's sensory appendage" .)
(Other definitions for satellite dish that I've seen before include "Bowl-shaped aerial" , "TV?aerial" , "TV plate" , "Type of TV receiver" , "TV signal receiver" .)