tqsl: tqsl (ARRL LOTW Trusted QSL software) tqsl: tqsl: tqsl is the Trusted QSL software required by the American Radio Relay tqsl: League's Logbook Of The World (LOTW) program. This allows you to tqsl: digitally sign your ADIF or Cabrillo log file to ensure that only tqsl: your legitimate logs are uploaded to LOTW. tqsl: tqsl: tqsl: tqsl: Homepage: http://www.arrl.org/ tqsl: