DMR (Digital Mobile Radio): DMR is a digital communication standard that offers improved audio quality, better spectrum efficiency, and enhanced features like text messaging and GPS tracking. It operates on two-slot Time Division Multiple Access (TDMA), allowing two simultaneous conversations on a single frequency. DMR also enables global connectivity through networks like DMR-MARC, linking repeaters worldwide and allowing operators to communicate across the globe.
D-STAR (Digital Smart Technologies for Amateur Radio): D-STAR is a digital voice and data protocol developed by the Japan Amateur Radio League (JARL). It allows for simultaneous voice and data transmission, providing efficient communication. D-STAR repeaters are linked via the internet, enabling global connectivity through a system of gateways and reflectors. This allows operators to join specific talk groups and participate in global nets, making international communication easy and accessible.
System Fusion: Developed by Yaesu, System Fusion combines both digital and analog modes, allowing seamless integration and communication between different types of radios. It features automatic mode detection and switching, improved audio quality, and internet connectivity through the WIRES-X network. This network enables global communication by linking repeaters and nodes worldwide, supporting various rooms and groups for specific discussions and events.
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