PMR-446 devices operate on 8 specific channels within the UHF (Ultra High Frequency) band, typically using FM (Frequency Modulation) for transmission. They're often used for personal or business purposes where short-range communication is needed, such as among event organizers, construction teams, security personnel, and recreational users like hikers or campers.

The range of PMR-446 radios can vary depending on the terrain and environmental conditions but generally spans a few kilometers. These devices are designed for quick and convenient communication and are popular due to their simplicity and ease of use.