Acarsdeco2: Windows //free\\ Download
Acarsdeco2 Windows Download: Ultimate Setup & Troubleshooting Guide
Acarsdeco2 is a multi-channel ACARS (Aircraft Communications Addressing and Reporting System) decoder designed specifically for RTL-SDR dongles. Unlike other decoders that require audio piping from separate SDR software, Acarsdeco2 interfaces directly with your hardware to decode up to three channels simultaneously and serves the data through a built-in web interface. How to Download Acarsdeco2 for Windows
While the software is widely discussed in the aviation community, it is not open-source and is primarily distributed through the developer's official site.
Official Source: The latest versions are hosted at xdeco.org.
Version Selection: For modern Windows systems, look for the standard .zip archive. A legacy version (acarsdeco2_xp.exe) is also available for compatibility with Windows XP. Acarsdeco2 Windows Download
Dependencies: You must have the Microsoft Visual C++ 2013 Redistributable (x86) installed. Even on 64-bit systems, the 32-bit version (vcredist_x86.exe) is required for the software to run. Initial Setup and Configuration
Acarsdeco2 is a console-based program. It does not have a standard installer; instead, it is configured using command-line arguments, typically executed via a .bat (batch) file.
Find Your PPM Offset: Use a tool like SDR# (SDRSharp) to determine your dongle’s frequency correction (PPM) and optimal gain.
Edit the Batch File: Open the included ad2.bat file in Notepad and customize the following flags: Windows 10 or later (32-bit or 64-bit builds
--freq: Set your local ACARS frequencies (e.g., 131.550, 131.725). --gain: Set the RF gain value found during testing. --freq-correction: Enter your dongle's PPM offset.
--http-port: The port for the web interface (default is 8080).
Run the Software: Double-click your modified .bat file to start decoding. Key Features and Enhancements
Multi-Channel Decoding: Monitor multiple ACARS frequencies at once without needing multiple SDR dongles. Step-by-Step Download Guide for Windows
Built-in Web Server: Access decoded messages in real-time by visiting http://127.0.0.1:8080 in your browser.
Database Integration: By linking a basestation.sqb file using the --db flag, you can replace raw aircraft IDs with actual registration and flight details.
Photo Support: Display aircraft images in the web interface by pointing the software to your photo directory with the --pictures flag. Troubleshooting Common Issues up to 3-channels ACARS SDR receiver for RTL2832 dongle
Prerequisites Before Downloading
To ensure a smooth installation, verify that your Windows system meets the following requirements:
System requirements (typical for Windows builds)
- Windows 10 or later (32-bit or 64-bit builds may be available).
- CPU: modest modern x86/x64 processor.
- RAM: 2 GB+ recommended.
- Audio input device or virtual audio cable for feeding demodulated audio.
- Optional: RTL-SDR or other radio front-end and appropriate drivers.
C. Test the Installation
Open a Command Prompt as Administrator.
Navigate to your Acarsdeco2 folder using cd C:\SDR\Acarsdeco2.
Run the following basic command to test on the default ACARS frequency:
acarsdeco2 --gain 40 --freq 131550000
If you see lines of text like [2026-05-04 12:00:00] Flight: DLH432 ..., congratulations! It works.
Typical download & installation steps
- Find the official download (EXE or ZIP) — prefer a releases page or the developer’s site.
- Verify file (checksum or digital signature) if available.
- If ZIP: extract to a folder (e.g., C:\Programs\ACARSDeco2 or your SDR tools folder).
- If EXE installer: run the installer and allow Windows prompts. Right-click → Run as administrator if needed.
- Install or configure any required runtime frameworks if the installer indicates (e.g., Microsoft Visual C++ Redistributable).
- Install and configure your SDR driver (Zadig for RTL-SDR if necessary).
- If using live SDR audio, set up an SDR client (SDR# / CubicSDR / Gqrx on Windows) and route audio to ACARSDeco2 via virtual audio cable or by using the application’s direct SDR support (if present).
- Open ACARSDeco2, set audio input device and sample rate, choose decode mode (LSB/USB/AM as required), and start decoding.