RADIANT — Radio Amateur Delay-tolerant Interplanetary Networking Testbed
From amateur packet radio to CubeSat relay to cislunar networking.
RADIANT brings Delay-Tolerant Networking (DTN) to amateur radio, enabling store-and-forward messaging across disrupted links from terrestrial ground stations to Low Earth Orbit (LEO) and ultimately to cislunar space.
Built on NASA Glenn's HDTN (High-rate Delay Tolerant Networking), this project implements the Bundle Protocol version 7 (BPv7) over amateur radio links.
RADIANT — Radio Amateur Delay-tolerant Interplanetary Networking Testbed
Collaborate With UsAbout the Project
Amateur Radio Links
Using amateur radio links as realistic disrupted networks to validate DTN protocols in real-world conditions.
HDTN Software
Running NASA Glenn's HDTN (High-rate Delay Tolerant Networking) software — a modern, high-performance implementation of the Bundle Protocol optimised for high data rates.
Store-and-Forward
Demonstrating store-and-forward networking over intermittent and disrupted links, surviving power cycles and outages.
CubeSat Payload
Building toward an amateur CubeSat hosted payload for ground-to-space DTN demonstration in Low Earth Orbit.
Cislunar Ambition
Eventual cislunar payload ambition — amateur participation in Earth-Moon Delay-Tolerant Networking.
Key Features
Protocol Stack
| Layer |
|---|
| Application (bping, bpsendfile) |
| BPv7 (Bundle Protocol) |
| LTP (Licklider Transmission) |
| AX.25 (Amateur Radio Link Layer) |
| KISS (TNC Serial Protocol) |
| USB Serial (TNC4) |
| G3RUH GFSK (9600 baud) |
Our Collaborators
This project is developed in collaboration with leading amateur satellite organisations.
Get Involved
We are actively seeking collaborators — amateur radio operators, researchers, universities, and space organisations.
Whether you can offer ground station partnerships, hardware contributions, flight opportunities, or software development expertise, we want to hear from you.
Contact Us to CollaborateMIT License