Club Log & LoTW Interface

Club Log to LoTW interface



Club Log has become the first logging service to achieve Trusted Partner™ status for Logbook of the World® (LoTW), ARRL and Club Log have announced. Radio amateurs holding LoTW “callsign certificates” who have uploaded logs to Club Log now can readily cross-post them to the highly secure LoTW —world’s largest repository for confirming Amateur Radio contacts.

The Trusted Partner program defines the requirements for an online service to store user credentials with acceptable security. All LoTW users, whether or not they work through Club Log as a Trusted Partner, are responsible for ensuring the security of their credentials. Individuals who rely on a Trusted Partner site for security have met the requirement to keep LoTW their credentials secure. Users who allow their callsign certificates to be compromised or who knowingly exploit compromised credentials may lose the privilege of using LoTW and participating in ARRL-sponsored award programs.

Club Log has implemented security at the level required by the Trusted Partner program, as verified by ARRL’s Information Technology Department. Trusted Partners are re-verified periodically to remain in the program. More information on technical specifications and on current Trusted Partner program members is available on the ARRL website.

Other logging sites are invited to join the program by implementing the Trusted Partner standard.


Michael G7VJR

Author of Club Log

Great news – today, ARRL announced that Club Log is the first Trusted Partner for LoTW integration:

This means we can sign and upload QSOs, or download LoTW matches directly from server to server, without relying on desktop looks like tqsl. You can read more about how it works here:

The LoTW tools are linked in the left menu of Club Log (look for ‘LoTW Sync’) and you’re invited to give it a try whenever you’re ready! Do let us know if you have any problems using it or understanding the process.

Marios and I are very glad to finally let you all know about this. It has been a really big effort over a long period of time, and during that time we have forged a close connection with the ARRL team. We’re ready to keep innovating with them.

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Michael G7VJR

About Club Log:

Club Log is a web-based application that analyses log files from radio amateurs all over the world. Using the logs, Club Log offers you a wide range of reports for your own benefit, and identifies large scale trends from the sum of all activity in the database.

About Logbook of the World

LoTW  is a web based database managed by ARRL to implement a QSO verification service. By using LoTW, hams  can claim QSOs, generally for claiming ARRL awards.