+ AA6YQ comments below I'm almost certain that LOTW, eQSL, etc store all those logs in a relational database of some sort, so, yes, at some point, all those contacts are stored in a datastructure...
+ Correct, but the representation of modes in those data structures is entirely independent of ADIF. My logging application (DXLab) represents FT4 QSOs with a Mode field that contains FT4. It's the import and export logic that takes care of correctly importing a QSO record and correctly exporting a QSO record. Unless you're inferring that the ARRL has a single monolithic .adif *file* somewhere that's got EVERYBODY's logs stored chronologically? + No, they don't. 73, Dave, AA6YQ _______________________________________________ wsjt-devel mailing list wsjt-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/wsjt-devel