These files are used by the QRZ Callsign program
| Name | Description |
|---|---|
| callbkc.dat | Callbook file - sorted by callsign |
| callbkc.idx | Callbook index - sorted by callsign |
| callbkn.dat | Callbook file - sorted by name |
| callbkn.idx | Callbook index - sorted by name |
| callbks.dat | Callbook file - sorted by state |
| callbks.idx | Callbook index - sorted by state |
| callbkz.dat | Callbook file - sorted by zip |
| callbkz.idx | Callbook index - sorted by zip |
| country.dat | List of country names |
| netaddr.qrz | Callbook Internal Data File |
| Images | Digital QSL Images |