Digital signature of QSL cards

This article is not a current or de facto standard. This article was translated by translating software, please contact [email protected] if you met any issues reading this article. Thanks. Digital signature of QSL cards. Background In recent years, more and more radio stations no longer send paper QSL cards, but instead use electronic QSL cards or use online log services. We realize that online log services rely too much on …… Read More