Walkie-talkie medium (5)
I believe the answer is:
radio
(Other definitions for radio that I've seen before include "Sound receiver" , "MW, LW or FM sound source" , "Communications device" , "Sound broadcasting" , "means of communication" .)
I believe the answer is:
radio
(Other definitions for radio that I've seen before include "Sound receiver" , "MW, LW or FM sound source" , "Communications device" , "Sound broadcasting" , "means of communication" .)