Learn Morse code at full speed with the classic Koch sequence.
Start with two characters at 20 WPM, reach 90% copy accuracy, then unlock the next symbol. This page keeps the entire Koch workflow, schedule, and trainer in one place.
Characters are sent at 18-20 WPM from day one so you learn the rhythm instead of counting dots.
Stay on the current stage until you can copy at least 90% of the characters correctly.
Each new stage adds exactly one character from the official 40-symbol Koch sequence.
Play a random character, type what you heard, and review the log to spot trouble letters.
Pick your stage, set the tone speed, then copy characters until you reach the accuracy goal.
Switching templates resets the current drill stats.
Start a drill to see your attempt log.
Follow the ARRL-certified order used in classic Koch drills. Each stage adds one of the 40 core characters in the historical progression.
Most learners move on after 1-3 focused sessions. If accuracy drops, repeat short drills with only the two newest characters.
Reduce session length, play the audio slightly slower, and shadow copy along with the tone before guessing.
Keep character speed fixed. If you need breathing room, widen the spacing instead of slowing the tone itself.