Airlink Express is a digital modes software used in amateur radio, known for its efficiency and advanced features. 

Airlink Express decodes PSK, QPSK, MFSK, RTTY.

It uses the computer sound card.

http://www.airlinkexpress.org

Supported Modes

 Airlink Express supports a variety of digital modes, including PSK, RTTY, and CW. This makes it versatile for different types of digital communications.

User Interface

 The interface of Airlink Express is designed to be intuitive and easy to use, making the software accessible to both beginners and experienced users.

Effective Decoding and Encoding

 The software is known for its ability to effectively decode digital signals, even in challenging signal conditions, and for its clear encoding.

Logbook Functions

 Includes integrated logbook functionalities, allowing users to record and track their contacts and communications.

Customization

 Users can customize the appearance and settings of the software, tailoring it to their preferences and operational needs.

Hardware Compatibility

 Works with a variety of amateur radio hardware, making it compatible with different station configurations.

System Requirements

 Generally requires a Windows operating system, but specific requirements may vary depending on the software version.

Support and Community:

Airlink Express has an active user community, with support available to help with technical issues or configurations.

Updates and Maintenance

The software is at the end of its public cycle. It remains available indefinitely, but will have no updates. The latest version is 2.9.9.1000, released on 10/28/2021

Cost: Airlink Express is available for free