Hi Phil, Reviewing the commit history I found that your issue was fixed around this time last year by a fellow FD participant: https://github.com/Tlf/tlf/pull/177
As 1.4.1 dates from April 2020 this fix is only part of the current master. When using 1.5 and specifying '1D WV' as 'Your exchange' the exported ADIF file has the right content. (I also added NO_RST config to suppress 599s) <adif_ver:4>3.10 <programid:3>TLF <programversion:7>1.5~git <eoh> <CALL:7>LZ1QN/P<BAND:3>15M<FREQ:7>21.0192<MODE:2>CW<QSO_DATE:8>20210605<TIME_ON:4>1501<STX_STRING:5>1D WV<SRX_STRING:3>003<eor> 73, Zoli
