(i) Transmitter: The radar transmitter produces high-frequency RF pulses and is transmitted into space by the antenna.
(ii) Duplexer: It switches the antenna between transmitter and receiver alternately. This is required because high power pulses of the transmitter will destroy the receiver if energy were allowed to enter the receiver.
(iii) Receiver: It amplifies and demodulates the received RF signals. It provides video signals on the output.
(iv) Radar antenna: The antenna transfers the transmitting signal to space with the required distribution and efficiency.