Use-cases / What you can do with FreeDATA

Send Data and Messages Over HF Channels

  • Direct Data Transmission: Facilitates the direct transmission of data over HF channels, ideal for use in remote, disconnected, or emergency environments where traditional communication infrastructures are lacking.
  • Built-in Messaging System: Allows for the sending of text messages and file attachments directly over HF channels, bypassing the need for conventional internet-based messaging services.
  • Asynchronous Messaging: Messages are stored internally and delivered when the connection is established, supporting communication in environments with intermittent or unreliable HF signal conditions. This improves chance, messages reach their destination despite connectivity challenges.


  • Multi-platform Compatibility: Offers broad support across various operating systems and devices including Windows, macOS, Linux, and Raspberry Pi, ensuring accessibility for a diverse user base.

  • Accessible via REST API: Provides a REST API for easy integration, allowing other applications, scripts, or tools to connect with and utilize FreeDATA’s functionalities, enhancing its versatility in application development.

  • Network-Based Client Application: Introduces a client application designed to connect with the FreeDATA server, simplifying the process of sending data and messages over HF channels for users who are not developers.

  • Open Source: FreeDATA is open source, enabling community contributions and allowing for transparency and customization.

What FreeDATA Is Not

  • Not a Traditional Internet or Cellular Communication Tool: Designed specifically for HF channel communication, not intended to replace standard internet or cellular communication methods.
  • Not Compatible with Standard Messaging Protocols: Does not integrate with SMS, MMS, or other popular messaging services, focusing instead on HF communication.
  • Not a Packet Radio TNC or KISS Interface Provider: Lacks functionality as a packet radio TNC and does not support KISS interface protocols.
  • Not Compatible with ARDOP or VARA Digital Modes: Utilizes its own methods for data and message transmission over HF channels, without direct compatibility with these specific amateur radio digital modes.