udarp

Universal Digital Radio Protocol written in Golang

UDARP is an advanced digital radio protocol that enables reliable HF communication in noisy environments. Its flexibility offers a wide range of features, including messaging, control, BBS, SMS, email, and beacons, and is designed to work with low power transmitters. Whether you need to establish communication in remote areas or transmit data over long distances, UDARP provides a powerful and efficient solution.

Project Status Update 🚦

August 2025:
The UDARP project has not been abandoned! I'm now back working on it again, but development will continue as time allows. Please note that the Maps functionality is currently down, but there's still a plan to bring it back in future updates. Thank you for your continued interest and support!

Announcing the New Maps Service: map.udarp.com 🎉 🥳 🍾

Introducing new, free maps service at map.udarp.com! Visualize UDARP, WSPR, FT4/8, VARAC, JT65 and other transmissions for a deeper understanding of radio spectrum and signal performance tracking. Ideal for amateurs, professionals, or radio enthusiasts, explore signal data through interactive maps at map.udarp.com!

Join the UDARP Community 🎉

We invite you to become a part of our growing community of developers, enthusiasts, and users who share a passion for UDARP. Connect with like-minded individuals, exchange ideas, discuss features, and contribute to the project's growth. To get started, join our vibrant community on Slack and Groups.io. By participating in these platforms, you'll gain access to valuable resources, receive support from fellow members, and stay updated on the latest news and announcements. Don't miss this opportunity to collaborate, learn, and help shape the future of UDARP!

Usage

Run

cd cmd/udarp
go run *.go config.env

List audio devices

cd cmd/udarp
go run *.go -l

Decoding with test data

cd cmd/udarp
./scripts/testStdin.sh < samples/test.raw

RigCtl (Hamlib) https://github.com/Hamlib/Hamlib

Hamlibs' rigctld is used to control the radios PTT and frequency, and the binaries for it can be found in pkg/txControl/bin, which are embedded into the binary at compile time. UDARP automatically determines the OS and architecture and uses the correct binary to start rigctld.

In progress:

• Real life stress testing

Complete:

• Merge soft decoding/viterbi/rs decoding
• Soft decoding
• Merge gfsk generator
• Live tracking with maps

Roadmap

• Web UI

Issues

If you encounter any issues, concerns, or simply wish to get in touch, we invite you to join our dedicated Slack and Groups.io spaces.