What is the primary purpose of a network in packet radio?

The primary purpose of a network in packet radio is to connect packet-radio stations over long distances. Packet radio is a mode of digital communication used in amateur radio that allows for the transmission of data packets between stations. This network enables users to exchange messages, transfer data, and connect with other radio stations, facilitating communication that might not be possible through voice transmission alone.

In this context, the idea of connecting stations over long distances is crucial, as packet radio can bypass some of the limitations of traditional radio communication, such as range and signal degradation. By routing data packets through various relay stations, users can maintain effective communication even when they are far apart. This network structure enhances the reliability and efficiency of data exchanges, making it ideal for various applications, including emergency communications and remote area operations.

The other choices do not align with the primary function of a network in this context. Transmitting audio signals is characteristic of voice communication modes, amplifying weak signals pertains to improving reception, and providing power to the station relates to the operational aspect of radio equipment rather than the network's role.