
Morse Trainer
Learn the Morse Alphabet step by step and follow your accuracy and progress.
Choose today’s session
Begin with structured lessons or jump directly into callsigns, speed, pressure and conversation. Each tool runs in your browser.

Learn the Morse Alphabet step by step and follow your accuracy and progress.

Move into groups, words and callsigns with detailed RX and TX analysis.

Recognise characters, words or callsigns before the balloons stack up.



Pull callsigns out of overlapping signals with realistic fists, fading and contest pressure.
Call CQ, meet other operators or practise together. Your next CW QSO starts here.
Included in the mobile Morse Trainer app for iOS and Android.
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Hear it. Key it. Keep climbing.
Learn Morse code from your first character, sharpen real CW operating skills and chase your next personal best—all online and free. Use your keyboard or connect the paddle already on your desk.
Free CW training in your browser
OpenShack combines a structured online Morse code trainer with advanced receiving and sending practice. Start with Koch lessons, then work on character groups, words, callsigns, timing and paddle control at the speed that suits you.
When you want pressure, enter the free online CW competitions: climb CW Summit, copy real callsigns in RufzXP TX, separate stations in Pileup Trainer or play Balloon Burst. Eligible runs can be published to the worldwide CW leaderboard.
From practice to the band
OpenShack CW trains both sides of a real QSO: copy what comes back, then answer with a paddle or straight key. Character spacing, word gaps and rhythm matter just as much as speed.
Your next run starts here