QSL Cards
The paper confirmation of a contact — still the traditional evidence for an award.
The record of every contact, and the engine behind awards and confirmations.
| Records | Date, UTC time, call, band, mode, RST, exchange, notes |
|---|---|
| Import and export | ADIF is the interchange standard; Cabrillo for contests |
| Rig control | CAT over serial or USB, with frequency and mode tracking |
| Call sign lookup | Integrated callbook data, online or offline |
| QSL tracking | Paper, bureau, and electronic confirmation services |
| Awards | DXCC, WAS, WAC and similar progress tracking |
| Backup | Regular export to ADIF, kept off the machine |
A station log records the date, time, frequency, mode, call sign and signal report for every contact. In many countries it is a legal requirement, and in all of them it is the evidence behind award claims and QSL confirmations.
Modern logging software does far more than store rows. It reads the radio's frequency and mode over a CAT interface, looks up call signs to fill in name and location, tracks which contacts have been confirmed, and exports in ADIF — the standard interchange format that lets you move your log between programs without retyping anything.
Nothing in logging software is dangerous, but an unbacked-up log is a single point of failure for years of work. Export to ADIF on a schedule and keep a copy somewhere other than the computer that runs the log.