RST·−· ··· −
// CW ABBREVIATION
RST — Signal report
Signal report
Usage and meaning
"RST" is the three-digit signal report: Readability (1-5), Signal strength (1-9), Tone (1-9). A perfect CW receives "599". In SSB the T is omitted ("59"). Always exchanged in a QSO.
QSO example
UR RST 599 599