Ham Radio General Class Practice Test

What two devices in an Amateur Radio station might be connected using a USB interface?

1. Computer and transceiver

2. Microphone and transceiver

3. Amplifier and antenna

4. Power supply and amplifier

The correct answer is: Computer and transceiver

The connection between a computer and a transceiver using a USB interface is common in amateur radio setups, making this answer accurate. USB (Universal Serial Bus) allows for digital communication between the computer and the transceiver, enabling functions such as logging contacts, controlling the transceiver’s parameters, and even processing digital modes. Transceivers are increasingly designed with USB ports, making them user-friendly and easily interfaced with computers for various applications, including sound card integration for digital modes like PSK31 or FT8. The ability to send data bi-directionally via USB enhances the operability of modern transceivers, taking advantage of the processing power and software capabilities of computers. In contrast to the other mentioned combinations, while microphones can connect to transceivers, they typically use audio input jacks rather than USB. Similarly, amplifiers and antennas do not generally connect via USB, as antennas are passive devices and amplifiers are connected typically through RF coaxial cables, while a power supply connects to an amplifier through DC wiring.