Fabian Kurz, DJ5CW/SO5CW

Today I moved https://lcwo.net/ (Learn CW Online) to a new home.

It was living on a shared hosting platform since 2008, but with the steady growth of users, I had to move on. The previous hosting (randonly?) blocked IP ranges when the server load grew too high. Not acceptable.

So I commissioned a new, beefy VPS for all of my ham radio projects and LCWO is now running smoothly on it. 82 users are logged in right now, the system load average is 0.2.

#hamradio #morsecode

Learn CW Online

Learn CW Online - a free web app for learning Morse code!

Mar 15 at 8:11amWeb
Show threadFabian Kurz, DJ5CW/SO5CW6d ago

The irony!

The transition to the new LCWO server was very smooth. I posted a note about it in the forum, asking users to reply if they encountered any problems due to the move.

The one thing that did not work properly after the move? Replying to forum posts 👻

Show threadraph f4lub6d ago
@DJ5CW \o/ & <3
Show threadDom HB9HLI6d ago
@DJ5CW Thank you, Fabien, for creating and maintaining this wonderful service. I created an account a long time ago, but I really should visit more often!
Show threadOwen Mehegan6d ago
@DJ5CW lcwo is so great. I used it when I was learning CW in 2009-10, and I've been recommending it to people ever since. It's great that you've kept it online and kept improving it for all that time. Thank you!
Show threadBen Brunzel6d ago
@DJ5CW Thanks Fabian for providing this awesome tool! It was my primary learning tool in 2024/2025 and I can now say: I've learned CW with it, which now is my primary mode 🙏
Show threadVP9KF6d ago
@DJ5CW Good to hear you found a good home fer ur stuff...
Show thread🌈 mischk 🇮🇱6d ago
@DJ5CW LCWO is my daily cw gym. Thank you so much for the platform.
Show threadDan KB6NU 🇺🇦6d ago
@DJ5CW First, thanks for keeping lcwo.net up and running all these years. After reading this, it occurs to me that it would be interesting to see how the number of users has increased over the years, if that information is available. I think it would be a decent measure of the growth of CW operation in general #HamRadio #CW
Show threadFabian Kurz, DJ5CW/SO5CW5d ago
@kb6nu The site stats are a bit hidden on the site: https://lcwo.net/stats
As you can see, in most categories, January 2026 was the month with the highest activity ever on the site!
Learn CW Online

Learn CW Online - a free web app for learning Morse code!

Show threadDan KB6NU 🇺🇦4d ago
@DJ5CW Very cool. Thanks!
Show threadMikel Forcada EA5IYL / N7EES5d ago
@DJ5CW Fabian, thanks a million for LCWO.net! Great tool!
Show threadRichard5d ago
@DJ5CW Yeah it's "VPS cloud/ddos protection" but they rarely tell you what it actually does. When you reach the bandwidth cap, this is the exact behaviour. They are protecting their network in your detriment, against a supposed DDoS. 'grats on building something that needed such scaling up, and thank you for keeping lcwo alive - it's also where I learnt CW.