### Preferences - Options

This tab lets you set several options:

There is no absolute standard for the file extensions (.XXX) used for Cabrillo and ADIF files. Several de facto extensions are in use.

TQSL lets you specify the extensions used on your system for the different file types. This is useful when you select the Sign existing ADIF or Cabrillo file choice from the File menu, as you can then select which kinds of file to show in the file selection dialog.

In the example shown above, files whose names end in ".log" or ".cab" will be treated as Cabrillo files, while those with names ending in ".adi" or ".ADI" are ADIF files. (On a system such as Windows that doesn't distinguish case in file names, the two ADIF entries would be unneccessary.)

The Options tab also provides a checkbox that allows you to choose whether TQSL should treat a nonamateur call-worked as an error. Some systems (notably ARRL's Logbook of the World) will not allow nonamateur call signs to be entered. By default, this box is unchecked, and nonamateur call signs are treated as errors. (Note: The check for nonamateur call signs is rudimentary. It's possible to get a call sign that is not a valid ITU identification past the check, but most common logging errors will be caught.)

Another checkbox allows you to select whether TQSL should prompt you for a QSO date range when signing an existing ADIF or Cabrillo file. (This is on by default.) See Setting a Signing Date Range for details.