[ dit · ] dah · Space/Enter submit ·
Backspace erase · R replay · N next
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Active + SRS uses the same weighted picker as Practice — weak characters surface more. Review only picks uniformly across your active set. Listen never promotes new characters.
Silence between consecutive letters in Listen mode. Independent of the Effective WPM (Farnsworth) setting used in Practice.1.0 s
Listen does not change practice progress.
Space toggles play/pause.
Key dits and dahs — letters appear after a short pause; longer pauses insert a space.
[ dit · ] dah
Letters commit after about 3 dit-lengths of silence; word spaces appear after about 7 dit-lengths. Thresholds scale with the WPM setting (with a small floor so high WPM stays comfortable). Unrecognized patterns show as ?. Keying does not change practice progress.
Progress
Ready to train?
Click below to start. Browsers require a user click before audio can play.
Default keys: [ for dit, ] for dah.
Change them in Settings if your USB Morse key sends different characters.