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About Crosswarn
The Crosswarn Trunked Radio System is an hobbyist radio Project 25 (P25) Phase I digital trunked network designed to provide reliable, standards-based communications. Crosswarn is built using MMDVM hotspot technology running on Raspberry Pi hardware, the system combines the flexibility of modern IP networking with the familiarity of P25 digital voice.
Our goal is to provide an open, community-driven platform where radio enthusiasts can learn, experiment, and communicate using professional-grade digital radio technology. Whether you're a licensed ham radio operator or new hobbyist, Crosswarn is for you. Crosswarn offers a welcoming environment for operators of all experience levels.
The network is powered by interconnected MMDVM hotspots that function as trunked radio sites, allowing seamless roaming and reliable voice communications across the system. By leveraging open-source software and affordable hardware, Crosswarn demonstrates how modern digital radio technologies can be adapted while encouraging technical innovation and education.
Crosswarn is committed to promoting experimentation, technical excellence, and the tradition of advancing the radio art. As the network continues to grow, we welcome licensed amateur operators who share an interest in digital communications, networking, and P25 technology.
Important Notes
Crosswarn is not for public safety, businesses, or similar. Crosswarn is an hobbyist radio system for individuals.
Encryption keys are for system members only.
Download encryption keys, system keys, and voice announcements on the Downloads page.
System Information
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