An apparatus for transmitting radio or television signals is the definition of which term?

An apparatus for transmitting radio or television signals is the definition of which term?

• A. Antenna
• B. Modulator
• C. Receiver
• D. Transmitter

Answer: (D)

In radio and TV systems, the device that creates and sends out the signal is the transmitter. It converts electrical energy into radio frequency energy and amplifies it, then feeds it to an antenna to radiate the signal into space. An antenna, on the other hand, merely radiates or receives signals; it does not generate the signal by itself. A modulator changes the information onto a carrier within the transmitting chain, but the overall apparatus whose primary purpose is to transmit is the transmitter. A receiver performs the opposite function, capturing signals and converting them back into usable electrical signals.

In radio and TV systems, the device that creates and sends out the signal is the transmitter. It converts electrical energy into radio frequency energy and amplifies it, then feeds it to an antenna to radiate the signal into space. An antenna, on the other hand, merely radiates or receives signals; it does not generate the signal by itself. A modulator changes the information onto a carrier within the transmitting chain, but the overall apparatus whose primary purpose is to transmit is the transmitter. A receiver performs the opposite function, capturing signals and converting them back into usable electrical signals.