Interactive Morse Code Center
Learn CW: The Sound of Radio
Master continuous wave (CW) communication through active Web Audio tones, virtual straight-key telegraph practice, code translation tools, and structured Koch method drills. Experience the thrill of pulling weak signals out of the noise.
Current Settings
600 Hz • 20 WPM
PROSIGN: K (Ready to Copy)
Interactive Audio Trainer
Generate random letters, words, or test custom text at adjustable speeds and frequencies.
20
Tone & Speed Parameters
Sidetone Frequency:
600 Hz
Audio Code Stream Output:
PRESS "PLAY DRILL" TO START
Ready
Listen carefully and copy in your head or on paper!
Text to Morse Translator
Type any text or amateur callsign below to instantly generate its Morse code representation and listen to it.
-.-. --.- / -.-. --.- / -.. . / .-- .----- .- .--
Virtual Telegraph Key
Spacebar / ClickPress and hold the key below (or press your Spacebar) to tap out Morse code. Dots (.) and dashes (-) will be decoded automatically.
CURRENT SYMBOL:
DECODED CHAR: _
International Morse Code Reference Chart
Click any character card below to hear its Morse audio sidetone!
Essential CW Q-Signals
QTH
What is your location? / My location is...
QSL
Can you acknowledge receipt? / I acknowledge receipt.
QRZ
Who is calling me? / You are being called by...
QSB
Are my signals fading? / Your signals are fading.
QRM / QRN
Man-made interference / Atmospheric static noise.
Essential CW Prosigns
AR (.-.-.)
End of Message (Over)
SK (...-.-)
End of Contact (Signing Off)
KN (-.--.)
Invite specific station to transmit
BK (-...-.-)
Break / Break-in transmission
AS (.-...)
Wait / Stand by