U2 Logger

U2 Logger (U2.Log)

The Heart of U2.Suite QSO Logging

U2 Logger is not just a standalone logging app; it is the **unified core logger engine** integrated into every application of the U2.Suite that handles contact logs. Whether you are operating digitally via U2.DigiFlow, working remote transceivers on U2.RemoteControl, or checking callbooks, your logs flow directly and securely into this high-performance core database in real-time.

Why Choose U2 Logger?

Amateur radio log books require speed, consistency, and data security. Built in modern C++20 and utilizing a highly optimized SQLite database model, U2 Logger guarantees that your contacts are recorded instantly and will never be lost due to application crashes or system shutdowns.

⚡ Unmatched Performance

Handles databases with hundreds of thousands of QSO records instantly. Fast indexing and C++ core optimization keep search response times below a millisecond.

🔄 Cross-App Synchronization

Uses Qt Remote Objects to sync contacts across local or remote network connections. Multiple suite apps can read and append to the log simultaneously.

🏆 Automatic Award Calculations

Directly integrates with the hybrid DxccResolver database. Instantly updates progress status for DXCC, WAS, WAZ, WPX, IOTA, and Ukrainian URDA awards as you type.

🌐 Web API & Cloud Integration

Automatic real-time uploads and status synchronization with LoTW (Logbook of The World), eQSL, QRZ.com, and ClubLog.

Key Advantages

  • Seamless ADIF Mapping: Standard-compliant import and export ensure your logs are easily portable to and from other platforms.
  • Multi-User Log Server: Run U2.Log.Server on a remote machine and connect multiple log-input stations concurrently for multi-op contests or DXpeditions.
  • Automatic Grid Locators & Coordinate Tracking: Calculates distances, headings, and beam directions instantly based on the contact’s locator grid.

Experience the reliability of a professional database structure coupled with a fast, modern Qt 6 interface. Try U2 Logger to simplify your shack workflows!