CW decoder · sender · logger
Dahdio decodes Morse from your radio’s audio, fed in through a USB audio interface or a cable. It finds every CW signal and decodes them all at once. You read one station full screen; the rest wait on the tuning strip.
Android and Linux. iOS, macOS and Windows later.
01 Input
Dahdio reads the radio’s own audio. Take its headphone, line or data output into a USB audio interface or sound-card adapter, or run a cable into the headset socket. When one is plugged in, Dahdio picks it up by itself.
The phone’s microphone works for a quick try, but the room adds noise and echo and the phone’s own processing works against weak signals. For real copy, use a direct connection.
02 Receive
Dahdio finds every CW signal in the audio and decodes them all at the same time. The one you are copying fills the screen; the others are marks on a tuning strip and in a +N stations list, one tap away.
The station you are reading never changes on its own because a louder one turned up.
03 Decode
Every word is read three ways: by a signal-processing decoder, a neural network and a search decoder. Where they disagree, the vote decides.
Developed and tested on real off-air recordings, hand-checked against what was actually sent: fading, noise, interference, and hand-sent Morse with all its quirks, not only clean machine-sent code.
Noise and carriers don’t fill the screen with junk. Want to see everything anyway? One switch shows it.
<ar>, <bt>, <kn> and <sk> appear as the single signs they are, not as runs of stray letters.
Each station is followed at its own speed and pitch, hand-sent or keyed, without you touching a setting.
04 Send
Letters, numbers, prosigns and punctuation on one keyboard. Send each letter as you type, each word when you press space, or compose a whole reply first. Anything not yet sent can still be edited, and the Correct key sends the usual spaced e’s and the word again.
05 Log
Log contests, POTA and SOTA activations and everyday QSOs on the same screen as the decoder. The callsign and exchange are filled in from what Dahdio heard. Nothing is logged until you confirm it.
06 Alerts
Give Dahdio your callsign, or any words you care about, and it alerts you when one appears in the copy. Each alert keeps the line around it, the time and the audio frequency.
07 Privacy
No account, no sign-in, no analytics. The audio never leaves the device it is decoded on.
Decoding happens entirely on your phone or computer, and needs no internet connection.
Audio is decoded as it arrives. It is never recorded or sent anywhere.
08 Price
When early access ends, Dahdio will have a free tier with limits, and Dahdio Full by subscription or by a pass that never auto-renews.
08 Price
Try Dahdio on your own radio.
No limits on stations or listening time.
Prices are shown in Google Play, in your currency. Subscriptions are managed and cancelled in Google Play.
Dahdio is coming to Google Play. Until the listing is live, write to [email protected] for early access on Android or Linux.
Get Dahdio on Google Play for Android. Running Linux? Write to [email protected] for the Linux build.
