Open a channel. Connect.
Send Morse code live.
Hear what's being sent on your channel and answer in Morse, in real time.
Tuning in…
General call
Every letter you key goes out the moment you finish it. Typed messages are sent with Enter.
Last message on the channel
Nothing yet. Open this page in another tab or device to try it.
Channels live on this server while it runs. Anyone who opens this page on your network can join.
Find your rhythm.
A single tap says more than you think.
short taphold
The space bar works too. A pause ends the letter.
A short pause separates letters; a longer one separates words. Listen to the whole rhythm.
How to send Morse code live
- When you open the page you're already listening to channel 1. There are 6 channels: agree with your friends on one.
- Key or type your message. In Live mode each letter goes out as soon as you finish it; in With button mode you build the message and send it with Transmit.
- Everyone on the channel hears it and watches it light up their Morse tree. Your callsign is the random name others see, and you can roll a new one.
- One person transmits at a time, like on a real radio channel. Each turn lasts up to 30 seconds; then the channel opens for the others.
Abbreviations radio operators use
Morse code is written short and fast, so operators use fixed abbreviations. Many later made it into voice radio.
- CQ
- General call: “anyone listening?”.
- DE
- “From”: separates the called callsign from the calling one. CQ DE HK3ABC.
- K
- “Go ahead, over”: invites anyone to reply.
- R
- “Received”: I got everything correctly.
- 73
- “Best regards / a hug”. The classic sign-off.
- 88
- “Hugs and kisses”: affectionate, for family.
- TU
- “Thank you”.
- OM
- “Old man”: buddy, any male operator.
- YL
- “Young lady”: a female operator.
- PSE
- “Please”.
- AGN
- “Again / repeat”.
- FB
- “Excellent, very good” (fine business).
- HI
- The laugh in Morse: “ha-ha”.
- WX
- “The weather”.
- CUL
- “See you later”.
- ES
- “And” (the & sign).
Prosigns
Groups sent together, as if they were a single letter, to run the conversation.
- SOS
...---...Help. Grave danger. Chosen for its unmistakable pattern, it's not an acronym for anything.- AR
.-.-.End of message (+). “I've finished sending this”.- SK
...-.-End of contact. “Closing, until next time”.- BT
-...-Separator / new paragraph (=). A pause within the message.- KN
-.--.“Go ahead, YOU only”: invites a specific station to reply.- AS
.-...“Wait a moment” (wait).- CT
-.-.-“Attention, I'm starting”: start-of-message signal.- Error
........Eight dots in a row: “I made a mistake, ignore the last word”.
Questions
Can I send Morse code to a friend online?
Yes. Both of you open Morseo's On air page and pick the same channel. Whatever one keys, the other hears and sees on the Morse tree in real time.
Do I need a radio or a license?
No. Morseo sends your Morse code over the internet, from browser to browser. Nothing goes out on radio frequencies, so you don't need equipment or a license.
What does “channel busy” mean?
Someone else is transmitting. Only one person sends at a time; wait for them to finish and the channel opens again.