What is packet radio?

Packet radio refers to a communication method that employs digital data packets for transmitting information over radio frequencies. This system breaks down data into small packets, which are then transmitted independently. Each packet consists of a portion of the data along with addressing information, allowing it to be routed through the network to its destination. This method enhances the efficiency and reliability of communication, as it allows for error checking and retransmission of only the lost or corrupted packets rather than the entire message.

In contrast to analog signal transmission, which is characterized by the continuous flow of signals, packet radio operates using discrete data packets, making it a much more modern and versatile approach to radio communication. Unlike other options that might describe different forms of radio or communication methods, packet radio specifically focuses on digital data transmission, enabling applications such as email, messaging, and file transfers effectively over radio frequencies.