It is necessary to install Python module Pandas beforhand: pip3 install --user pandas
./convert_ods_to_opengd77.py <ODS_contact_list_without_diacritics.csv>
Generates: callsigns_opengd77.csv file.
Import to opengd77:
Set your device to display a 2nd line containing contact details or switch to 'Auto':
Final result:
