TrustedQSL provides the software used to digitally sign amateur radio contact records before submitting them to ARRL’s Logbook of The World service. Signing allows LoTW to verify that uploaded contacts are associated with an authenticated amateur radio callsign.
The application manages both callsign certificates and station locations. This is important for operators who use more than one station, operate portable, or need QSO records associated with different geographic locations. TQSL can also be invoked by compatible logging software, allowing signing and uploading to form part of a broader logging workflow.
This is free and open source software.
Key Features
- Digitally sign amateur radio QSO records for submission to Logbook of The World.
- Request, install, renew and manage callsign certificates.
- Create and maintain multiple station locations associated with a callsign.
- Check QSO records before signing them and report data that requires attention.
- Process ADIF log files generated by amateur radio logging applications.
- Process Cabrillo contest logs where appropriate.
- Sign log data into the format accepted by Logbook of The World.
- Upload signed QSO records directly to LoTW.
- Track previously submitted QSOs to help avoid unnecessary duplicate uploads.
- Operate interactively through the graphical application or from the command line.
- Allow logging programs to invoke TQSL automatically for signing and uploading.
- Preserve certificates, station locations and preferences when upgrading the application.
Website: sourceforge.net/projects/trustedqsl
Support:
Developer: TrustedQSL authors
License: TrustedQSL License

TrustedQSL is written in C++. Learn C++ with our recommended free books and free tutorials.
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Read our verdict in the software roundup.
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