OpenRTX: Open Source Firmware Powering the Future of Digital Radios

In the world of amateur radio, freedom, flexibility, and innovation have always been driving forces. If you’ve ever dreamed of taking full control over your digital radio — from features and firmware to custom communication protocols — then OpenRTX is your gateway to that dream.

Welcome to OpenRTX, the free and open source firmware project designed to unlock the full potential of your digital transceivers.

🔓 What is OpenRTX?

OpenRTX is a modern, community-driven firmware replacement for digital mobile radios (DMRs). It replaces the stock firmware on supported radios — like the popular Radioddity GD-77, Baofeng DM-1801, and others — offering:

• 🛠️ Full customizability
• 💡 A sleek, open source interface
• 📡 Support for amateur radio features that go far beyond the manufacturer’s offering

If you’ve ever felt limited by factory firmware or frustrated by clunky menus and poor updates, OpenRTX is the breath of fresh air you’ve been waiting for.

🧰 Key Features of OpenRTX

• 🎛️ Custom GUI and Theme Support
  Change fonts, layouts, and behavior to suit your style and use-case.
• 🧠 Improved User Experience
  Say goodbye to awkward menus and hello to fast, intuitive navigation.
• 🔊 Digital Voice Modes (DMR)
  Full support for DMR Tier II, with plans for analog and other modes.
• 📈 Experimental Features and Developer Hooks
  Add your own tools, telemetry displays, and even Morse code practice modes.
• 🛡️ Freedom-Respecting Firmware
  OpenRTX is licensed under GPLv3 — meaning it’s yours to study, modify, and share.
• 💻 Active Development and Community Support
  Join a passionate group of developers, testers, and radio operators working together to improve the platform.

📻 Supported Radios

OpenRTX is currently compatible with several widely-used, affordable DMR radios including:

• Radioddity GD-77
• Baofeng DM-1801
• Baofeng RD-5R
• TyT MD-380 / MD-390 (under development)

More devices are being explored, and contributions to support new radios are always welcome!

👩‍💻 For Developers and Hackers

If you love tinkering, reverse-engineering, or developing embedded software, OpenRTX offers a treasure trove of opportunities:

• Explore the internals of radio transceivers
• Build your own features
• Contribute patches, themes, or localizations
• Interface radios with external tools and custom code

It’s more than just firmware — it’s a collaborative playground for radio enthusiasts and embedded devs alike.

🌍 Why OpenRTX Matters

Proprietary firmware often limits the potential of hardware. OpenRTX represents a broader movement toward user empowerment, open hardware, and community-driven innovation in the amateur radio world.

It’s not just about unlocking your radio — it’s about unlocking possibilities.

🚀 Get Started Today

Ready to flash your radio with OpenRTX and explore the future of open-source communications? Head over to https://openrtx.org for:

• Downloadable firmware and tools
• Flashing guides
• Source code and documentation
• Community forum and Discord

Whether you’re a ham radio operator, a maker, or a software developer — OpenRTX invites you to take control and broadcast your freedom.

Power to the user. Freedom to communicate. That’s OpenRTX. 🛠️📡