Train • Test • Improve
Morse code practice
Two modes: a Koch trainer that plays random groups at your target speed, and a quiz that asks you to type the character you hear. Settings save automatically.
Koch trainer
Plays random 5-character groups using only the letters in your active set. Start with K, M and add one character at a time once you copy comfortably.
Suggested order: K M R S U A P T L O W I . N J E F 0 Y , V G 5 / Q 9 Z H 3 8 B ? 4 2 7 C 1 D 6 X
20 WPM
12 WPM (extra space between letters)
650 Hz
Single-character quiz
We play one Morse character. Type it. The next one starts automatically — see how fast you can get with full ITU spec timing.
18 WPM
Press Start.
How to learn fast
- Practise every day. Ludwig Koch found half an hour of practice the most effective session; if that is too much, keep the sessions short but regular.
- Keep the character speed at 12 WPM or more, too fast to count dots. Use Farnsworth to slow only the gaps.
- Add the next character once you hit ≥ 90% accuracy on the current set.
- Type what you hear — never count dots.
- Switch up the tone (around 600–700 Hz) so you don’t over-fit to one frequency.
- Measure now and then: the speed test raises the speed 1 WPM for every group you copy and hands you a number in WPM.
When copying starts to click
Copying by ear is only half of CW — most people add sending once the Koch set stops feeling like work. You don't need to spend much to start: a basic key teaches clean timing, and a paddle is the other common choice; many courses, CW Academy among them, teach on a paddle from the start.
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