| Keyword | Most frequent expressions (number of websites) |
|---|---|
| qsl | qsl card (9), qsl info (4), qsl kaart (2), qsl policy (2), picture qsl (1), paper qsl (1), wab qsl (1), specific qsl (1), understand qsl (1), printing qsl (1), kaart qsl (1), standaard qsl (1), soon qsl (1) |
| qso | number qso (2), qso people (1), antenna qso (1), qso cw (1), personal qso (1), rapidly qso (1), qso log (1), sunsdr qso (1), qso fun (1), cable qso (1), chew qso (1), qso old (1), qso time (1) |