# AT2 HT: reconstructing Baofeng AT2 BLE control and messaging

> AT2 HT implements the Baofeng ALERVITES AT2 radio's BLE control and off-network messaging in an Android app. It supports channel programming, messages and PTT, and replaces voice encoding with OpenCORE-AMR MR475 and image processing with a Go implementation compared against the original library.

- Type: Case study
- Targets: Protocol
- Category: Independent reconstruction cases
- Relationship: Independent reconstruction project
- Sources reviewed: 2026-11-08
- Added to the catalog: 2026-11-08
- Original resource: <https://github.com/byf3332/Baofeng-ALERVITES-AT2-Android>
- Primary source: <https://github.com/byf3332/Baofeng-ALERVITES-AT2-Android/blob/d91f50f6ef6a5dd0b200d0e53d9fe809b379a454/README.md>
- Catalog page: <https://awesomerea.org/resources/at2-ht-case/>
- Record JSON: <https://awesomerea.org/resources/at2-ht-case/record.json>
- Chinese version: [简体中文](https://awesomerea.org/zh/resources/at2-ht-case/index.md)

## Requirements & limits

- **Prerequisites:** A Baofeng ALERVITES AT2 and an Android 8.1 or newer device with BLE, audio and location capability are required.
- **Scope:** USB-C programming, firmware updates and full RF air-interface decoding are outside the project scope.
- **License:** Apache-2.0 license.

## Primary sources

1. <https://github.com/byf3332/Baofeng-ALERVITES-AT2-Android/blob/d91f50f6ef6a5dd0b200d0e53d9fe809b379a454/README.md>
2. <https://github.com/byf3332/Baofeng-ALERVITES-AT2-Android/blob/d91f50f6ef6a5dd0b200d0e53d9fe809b379a454/tools/verification/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.