# Radtel RT-890: reimplementing radio firmware v1.34

> The Radtel RT-890 project reimplements version 1.34 of the radio's firmware as C source to study device behavior. Its tree contains application logic, radio and peripheral drivers, board support and startup code, while the author notes that some variables and functions remain unidentified.

- Type: Case study
- Targets: Firmware
- Category: Independent reconstruction cases
- Relationship: Independent reconstruction project
- Sources reviewed: 2026-11-08
- Added to the catalog: 2026-11-09
- Original resource: <https://github.com/DualTachyon/radtel-rt-890-oefw>
- Primary source: <https://github.com/DualTachyon/radtel-rt-890-oefw/blob/ec8e053e8e3eef0c974c248877d68638582cf382/README.md>
- Catalog page: <https://awesomerea.org/resources/radtel-rt-890-firmware-case/>
- Record JSON: <https://awesomerea.org/resources/radtel-rt-890-firmware-case/record.json>
- Chinese version: [简体中文](https://awesomerea.org/zh/resources/radtel-rt-890-firmware-case/index.md)

## Requirements & limits

- **Prerequisites:** arm-none-eabi GCC 10.3.1 is recommended because other versions may produce an oversized flash image.
- **Limits:** Some variables and functions remain unidentified; the project adds no customizations or improvements over the original firmware.
- **License:** Apache-2.0 license.

## Primary sources

1. <https://github.com/DualTachyon/radtel-rt-890-oefw/blob/ec8e053e8e3eef0c974c248877d68638582cf382/README.md>

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## About this entry

The description was reviewed against primary sources.
Original editorial content: MIT. Linked projects, papers and assets retain their own rights and licenses.