ARRL Technician Practice Exam

What is a transceiver?

1. A device for storing radio frequencies

2. A unit combining the functions of a transmitter and a receiver

3. A type of antenna

4. A circuit for amplifying signals

The correct answer is: A unit combining the functions of a transmitter and a receiver

A transceiver is a unit that integrates the functions of both a transmitter and a receiver into a single device. This combination allows for bidirectional communication, meaning it can both send and receive signals, which is essential for effective two-way radio communication. In practical terms, the transceiver can convert electrical signals into radio waves for transmission and then revert incoming radio waves back into electrical signals to be processed. This function is crucial in amateur radio and various other communication systems where compact and efficient devices are preferred. The other choices do not accurately describe the function of a transceiver. For instance, a device for storing radio frequencies does not capture the essence of what a transceiver does, as it lacks the ability to both transmit and receive signals. Similarly, a type of antenna is a separate component that focuses solely on radiating or receiving radio waves, without the capability to process or convert those signals. Lastly, a circuit for amplifying signals refers to a process or component that boosts the strength of signals but does not encompass the combined capabilities of transmission and reception found in a transceiver.