{"id":34751952,"url":"https://github.com/loic-fejoz/hqfbp","last_synced_at":"2026-05-25T06:04:44.701Z","repository":{"id":330116783,"uuid":"1120196581","full_name":"loic-fejoz/hqfbp","owner":"loic-fejoz","description":"Hamradio Quick File Broadcasting Protocol","archived":false,"fork":false,"pushed_at":"2025-12-23T09:29:54.000Z","size":163,"stargazers_count":1,"open_issues_count":0,"forks_count":0,"subscribers_count":0,"default_branch":"main","last_synced_at":"2025-12-24T23:46:18.694Z","etag":null,"topics":["cubesat","hamradio","hqfbp","protocol","radioamateur","satellite","satellite-data"],"latest_commit_sha":null,"homepage":"","language":"Jupyter Notebook","has_issues":true,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":null,"license":"mit","status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/loic-fejoz.png","metadata":{"files":{"readme":"README.md","changelog":null,"contributing":null,"funding":null,"license":"LICENSE","code_of_conduct":null,"threat_model":null,"audit":null,"citation":null,"codeowners":null,"security":null,"support":null,"governance":null,"roadmap":null,"authors":null,"dei":null,"publiccode":null,"codemeta":null,"zenodo":null,"notice":null,"maintainers":null,"copyright":null,"agents":null,"dco":null,"cla":null}},"created_at":"2025-12-20T17:29:13.000Z","updated_at":"2025-12-23T22:48:42.000Z","dependencies_parsed_at":null,"dependency_job_id":null,"html_url":"https://github.com/loic-fejoz/hqfbp","commit_stats":null,"previous_names":["loic-fejoz/hqfbp"],"tags_count":null,"template":false,"template_full_name":null,"purl":"pkg:github/loic-fejoz/hqfbp","repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/loic-fejoz%2Fhqfbp","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/loic-fejoz%2Fhqfbp/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/loic-fejoz%2Fhqfbp/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/loic-fejoz%2Fhqfbp/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/loic-fejoz","download_url":"https://codeload.github.com/loic-fejoz/hqfbp/tar.gz/refs/heads/main","sbom_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/loic-fejoz%2Fhqfbp/sbom","scorecard":null,"host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":286080680,"owners_count":28020538,"icon_url":"https://github.com/github.png","version":null,"created_at":"2022-05-30T11:31:42.601Z","updated_at":"2022-07-04T15:15:14.044Z","status":"online","status_checked_at":"2025-12-25T02:00:05.988Z","response_time":58,"last_error":null,"robots_txt_status":"success","robots_txt_updated_at":"2025-07-24T06:49:26.215Z","robots_txt_url":"https://github.com/robots.txt","online":true,"can_crawl_api":true,"host_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub","repositories_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories","repository_names_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repository_names","owners_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners"}},"keywords":["cubesat","hamradio","hqfbp","protocol","radioamateur","satellite","satellite-data"],"created_at":"2025-12-25T05:23:31.285Z","updated_at":"2026-05-25T06:04:44.685Z","avatar_url":"https://github.com/loic-fejoz.png","language":"Jupyter Notebook","funding_links":[],"categories":[],"sub_categories":[],"readme":"# Hamradio Quick File Broadcasting Protocol (HQFBP)\n\nThe **Hamradio Quick File Broadcasting Protocol (HQFBP)** is designed to enable efficient, robust, and asynchronous file and data broadcasting over radio communication links. It is particularly optimized for challenging environments such as satellite downlinks, leveraging **CBOR (RFC 8949)** for compact headers and minimizing overhead.\n\nFor the full technical specification, please refer to [RFC](./RFC.md).\n\n## 🛰️ FOSM-1 Mission Context\n\nThis protocol is not just a theoretical concept; it is one of the experiments that will be run live on an actual satellite payload called **[FOSM-1](https://www.federation-openspacemakers.com/fr/participer/projets/phoenix-infrastructure-informatique-orbi/fosm-1/)**.\n\nFOSM-1 acts as a testbed for open-source space technologies, and HQFBP will demonstrate reliable file broadcasting from orbit to ground stations.\n\n## ⚖️ Comparison with Other Protocols\n\nTo help radio amateurs understand where HQFBP fits in the ecosystem, here is how it compares to existing solutions:\n\n| Protocol | Type | HQFBP Comparison |\n| :--- | :--- | :--- |\n| **FLAMP** | File Broadcasting (FLDIGI) | **Modern Alternative:** Like FLAMP, HQFBP broadcasts files. However, HQFBP uses binary CBOR headers instead of text-based headers, significantly reducing overhead for low-bandwidth links. It also separates metadata from payload more cleanly. |\n| **SSDV** | Image Broadcasting | **General Purpose:** SSDV is excellent but specialized for images. HQFBP is content-agnostic; it can transfer images, text, binary binaries, or any other file type with equal efficiency, supporting optional compression and digests. |\n| **PACTOR** | Connected Mode / ARQ | **Broadcast (Connectionless):** PACTOR is primarily a connected mode protocol (Auto-Repeat Request), requiring a handshake. HQFBP is a **broadcasting** protocol (FEC/Erasure coding supported), meaning one station transmits and *many* can receive simultaneously without a back-channel. |\n| **WINLINK** | Email / Message System | **Transport Layer:** Winlink is a full global email system. HQFBP is a lighter-weight **transport layer** focused on the efficient delivery of a single file or message. HQFBP could theoretically be used as a transport *for* a system like Winlink. |\n| **PACSAT** | File Broadcasting (AX.25/UI) | **Modern Evolution:** PACSAT (PFT) pioneered file broadcasting for early Microsats using AX.25 UI frames. HQFBP evolves this by being transport-agnostic, using CBOR for extensible, high-efficiency headers and supporting modern erasure coding (RaptorQ/RS) for better recovery without a back-channel. |\n| **D-Star DV** | Digital Voice (Fast Data) | **Data Priority:** D-Star DV handles slow data (1.2 kbps) alongside voice, or repurposes voice bits for \"Fast Data\". HQFBP is designed for flexible, high-efficiency data broadcasting across any link without being tied to specific hardware protocols, allowing better performance on variable-quality channels. |\n\n\n## 🚀 Key Features\n\n*   **Low Overhead:** CBOR-encoded headers with small integer keys.\n*   **Asynchronous:** Designed for broadcast; no handshake required.\n*   **Robust:** Supports chunking for large files and robust header reconstruction.\n*   **Flexible:** Optional compression (gzip, etc.) and integrity checks (CRC32, SHA256, etc.).\n\n## 🛠️ Implementations\n\n* 🐍 [py-hqfbp](https://github.com/loic-fejoz/py-hqfbp) -- The Python reference implementation also used for testing and prototyping.\n* 🦀 [hqfbp-rs](https://github.com/loic-fejoz/hqfbp-rs) -- The Rust implementation used for the FOSM-1 payload.\n\nBoth have a simulator to stress-test the protocol under various bit error rate (BER) conditions of the communication link. They also have utility tools to send/receive files by connecting to a KISS-over-tcp server, like Direwolf and FLDIGI.\n\n## Usage as a Hailing Protocol\n\nThe HQFBP protocol can be used as a hailing protocol, as described in [HAILING.md](./HAILING.md). The hailing protocol is used to announce the protocol stack to be used for the communication link on a given frequency.\n\n## License\n\nSee [LICENSE](./LICENSE) for details.\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Floic-fejoz%2Fhqfbp","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Floic-fejoz%2Fhqfbp","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Floic-fejoz%2Fhqfbp/lists"}