Όνομα χρήστη:
Κωδικός πρόσβασης:

Български Português brasileiro
Bosanski Català
繁體中文 Česky
Dansk Deutsch
English Español
Suomi Français
Ελληνικά Hrvatski
Magyar Italiano
日本語 한국어
Bahasa Melayu Nederlands
Norsk Polski
Português Română
Русский සිංහල
Slovenščina Srpski
Svenska ภาษาไทย
Türkçe Українська
Ποιός είναι online; (27)

About LCWO - Learn CW Online

(only in English for now)

This site, Learn CW Online (LCWO), was established in May 2008 by Fabian Kurz, DJ5CW (Impressum, profile), hoping to make learning and practicing CW (Morse code) as easy and effortless as possible.

LCWO is under constant development; all comments and suggestions are welcome. To get in touch with the author, use the contact form or send an email to help@lcwo.net. For general questions and discussion, feel free to use the forum. Thanks to all the users who contributed to the project so far. Without all the feedback the site wouldn't be what it is today!

Using LCWO is and will always remain free of cost. We are not interested in monetary donations.


Many thanks to following persons for translating the user interface to new languages:

  • Amry, 9M2RIE (ms)
  • Oleg, RD1A (ru)
  • Bekir, TA2RX (tr)
  • fdl (zh)
  • Tony, LZ3AI (bg)
  • Mikolaj, UT4UQN (uk)
  • Rodolfo, PY3MAY (br)
  • Reinhardt, LA6ALA (no)
  • Alex, YU0W (sr)
  • Jerry A. (cs)
  • TekCroach (si)
  • Joe, HL5KY (ko)

If you like to help to translate LCWO to another language, please get in touch with Fabian, DJ5CW via email. Thanks!

Spread the word!

If you like to link to LCWO from your website or blog, you may want to use one of the following banners or buttons. Also high resolution logos (b/w) are available for QSL cards.

Banner, 468x60px:
[LCWO Banner]

Buttons, 80x15px:
[LCWO Button 1]  [LCWO Button 2]

Logos for QSL cards (ZIP file with several formats, PDF, EPS, PNG):
[LCWO print logo]

Reviews / Ratings

[eham.net logo]

This site has been reviewed (4.7/5 from 21 reviews) on eHam.net.
Thanks, and please add your own review if you like!

You may also want to rate LCWO on eHam's links section.

Rate this site
The DXZone.com

(with 10 = top)

Rating details at DXzone.com

Press release

Feel free to use the following announcement of LCWO for your club newsletter, website, blog, etc.

A new website to learn and practice Morse telegraphy has been launched:
http://lcwo.net/ - Learn CW Online

There are already hundreds of training programs, MP3/CD courses and practice
aids available, but LCWO follows a radically different concept: While sticking
to  well-proven methods for learning and practice, all you need for using LCWO
is a web browser!

This gives the user the liberty to practice CW wherever an internet connection
is available, always retaining the personal settings, scores and statistics.

Currently the site, which is available in 33 languages offers a complete
Koch method Morse course, code group practice, callsign- and plain text training
modes and also allows to convert random text to Morse MP3s.

A high score list is available to compare results with other users, personal
statistics help to track training progress.

LCWO.net is a non-commercial project. Creating a free account only takes a few
seconds, and you can start practicing CW right away!

Fabian Kurz, DJ1YFK 

Browser compatibility, technical stuff

LCWO supports all modern browsers (Firefox, Chrome, Safari) and it known to work with Edge and Opera.

Development of LCWO takes place under Debian GNU/Linux and Ubuntu, using the fantastic vim editor. The site runs on an Apache Webserver, is mostly programmed in PHP (without any frameworks, all homebrew) and uses a MySQL database. The Morse code is generated by jscwlib, the downloadable Morse MP3 and OGG files are generated by customized versions of ebook2cw which run as compiled CGIs, written in C.

LCWO is Open Source and you can find the source code at https://git.fkurz.net/dj1yfk/lcwo.