tqsl
tqsl is a macOS amateur radio utility used to sign station logs and submit confirmed contacts to ARRL Logbook of the World.
What is tqsl?
tqsl, also known as Trusted QSL, is a macOS utility for amateur radio operators who use ARRL Logbook of the World. It helps users request and manage callsign certificates, digitally sign contact logs, and submit those signed records for confirmation. Operators commonly use it after exporting logs from station logging software in ADIF or Cabrillo formats, or through logging apps that integrate with TQSL. The app is part of the workflow for earning and tracking LoTW-based confirmations and awards, where trusted signature data matters. It is available for Mac, Windows, and Linux, and its main role on a Mac is preparing and sending signed log data rather than acting as a general-purpose logging program.
Key features
- Request and manage callsign certificates for LoTW use
- Digitally sign amateur radio log files before upload
- Submit signed QSOs and certificate requests over the internet
- Work with ADIF and Cabrillo log formats
- Integrate with logging applications that export or submit through TQSL
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Safety overview
Status: Safe
This is legitimate amateur radio logging support software used for certificate-based log signing and upload. It may store certificate material, callsign details, and related log-signing settings on your Mac, so keep backups of important certificates and use standard account security practices. Network access is normal when submitting signed records or certificate requests.
Recommendation: Keep tqsl if you use ARRL Logbook of the World or any logging workflow that depends on Trusted QSL certificates and signed uploads. If you no longer use LoTW, you can remove it, but export or back up any certificate material you may need before uninstalling.
Common paths
/Applications/TrustedQSL/tqsl.app/Applications/TrustedQSL/TQSL Cert.app
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