CWops Morse Code Trainer

Practise copying and sending Morse code using a scheme of sessions developed by Rob Brownstein of CWops. The software is written by Stephen C Phillips. A Japanese version is also available.


For some of the sessions some additional information is needed. This information is not sent to nor stored on the server.


Choose your session and then practise the copying and sending segments.


Play each of these segments again and again until you feel you recognise the sound pattern. Click on word tiles to hear them separately.

Text to copy


Play a segment, then try to imitate it, exactly, using your key or keyer. Repeat it as many times as it takes to feel that you’ve got the correct word pattern.

Text to send


If you need to practise any other sequences then enter them below. If you want to use prosigns then enclose them with angle-brackets (e.g. "<bk>").

Choose the letters you want to practise:

The letters above are shuffled to make “words” of characters,
each repeated times.
The “sentence” will have words.

Sound Controls
Segment gap

If you find this software useful, please make a small donation to the author (and convince his wife that the time spent on it is worthwhile...).

Thank you!



Please enable cookies on this site to store your preferences between training sessions.

There are many keyboard shortcuts which can also access additional functions such as playing the next segment. Press ? to list them.

This translator requires JavaScript to be enabled. It is known to work well in recent Chrome, Firefox, Safari and Edge web browsers, including mobile versions (which implement the Web Audio API and can be downloaded here). It works, with some sound artefacts, in Internet Explorer v11 (where it has to use Flash).

The download buttons download a WAV file of the sound for the segment displayed with a pause at the end defined by the segment gap. Safari does not properly support the download buttons but they can be made to work in the desktop version by holding the Option key when clicking them and then saving the file with the ".wav" file extension.

Offline version

If you want to use this training software offline then you can download it here. To use it, unzip the file, go into the folder and double-click on "index.html". It's a bit out of date, but everything should work apart from the donation button!

Change log