TR (all versions)

TR LOG 6.90 and later
TR Linux (all versions)

Save CTY.DAT to your TR directory.

TR LOG 6.89 and earlier

Save CTY.DAT to your TR directory.
TR4W
Save CTY.DAT to your TR4W directory.

TR LOG Contesting Logging Software by N6TR
TR Linux Linux port of TR LOG by W9CF
TR4W Windows Contest Logger, adapted to Windows API by UA4WLI