transmitter
n
1 device or equipment for transmittingradio or other electronic signals 发射机; 发报机; 发射台; 发报台.
2 person or creature or thing that transmits 起传送或传播作用的人或生物或事物
The mosquito is a transmitter of disease. 蚊子能传染疾病.
Of course he is. He's very successful. He's made lots of records. They broadcast a programme of his music last month on the radio. Why don't you come on Saturday? I think you'd enjoy it.