GC Wizard currently knows the following spelling tables:
- ICAO 1947
- NATO
- US NAVY, 1908, Version 1
- US NAVY, 1908, Version 2
- US NAVY, 1920
- US NAVY, 1942
- APCO, 1967
- APCO, 1974
- ARRL, 1930
- ARRL, 1936
- ARRL, 1946
- ARRL, 1970
- ARRLDX
- Esperanto
- France
- Belgium, French
- Switzerland
- French Canadian
- Germany, 1950
- German, 2022
- German, GDR
- Austria
- Netherlands
- Belgium
- Italy
- Spain
- Brazil
- Portugal
- Sweden
- Denmark
- Norway
- Finland
- Turkey
- Romania
- Czech Republic
- Yugoslavia
- Serbia
- Slovenia
- Poland
- Slovakia
- Russia, Cyrillic
- Russia, Latin
- Greece, Greek
- Greece, Latin