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Local Fusion partner, Catalina ARA

 The Catalina Amateur Radio Association (CARA) operate a Fusion repeater operating on a frequency of 448.900 (-) and linked to WIRES-X room #83196 "CAL-NET", this room is bridged to YSF83196 US-CALNET which can be accessed via a hotspot. The repeater is located at the airport on Catalina Island and covers most of Los Angeles & Orange Counties and can also be heard in neighboring counties. *There will be times when the repeater is connected to WIRES-X room # 62394* https://www.cararadio.com/ https://calnet.org/c4fm
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The different digital voice modes D-STAR, DMR, Fusion etc

Digital voice in amateur radio spans several distinct systems, each built on different technical philosophies and communities. Together they offer clearer audio, efficient spectrum use, and advanced networking features. 📡 D‑STAR (Digital Smart Technologies for Amateur Radio) D‑STAR is the earliest widely adopted amateur digital voice mode. It was designed specifically for ham radio rather than commercial use. Technology — Uses an AMBE vocoder and a 4800 bps data stream for voice plus low‑speed data. Strengths — Mature reflector network, callsign‑based routing, strong support from Icom and Kenwood. Use cases — Local repeater linking, worldwide QSOs via reflectors, integrated callsign routing. Culture — Popular with operators who value a purpose‑built amateur system with predictable behavior. 🔶 DMR (Digital Mobile Radio) DMR began as a commercial ETSI standard and later became the most widely used amateur digital voice mode. Technology — TDMA (two time slots) on a 12.5 kHz channel...
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Radio Research Society of Long Beach