Telegraphy by Morse Codes (CW)

Communication is through tones, which are controlled by switching the transmitter on and off. The operator on the receiving side decodes the morse code by listening. The Morse Code was developed by Samuel F.B. Morse. The individual characters of the morse alphabet are composed by sequences of short and long tones (dots and dashes).

Morse Code (CW) is the oldest operating mode in radio communication. CW is becoming less important today, but still many HAMs like this mode and practice CW with much love! CW has many advantages, because it ...
  • requires only little technical effort
  • provides much excitement
  • is easy to understand internationally due to short abbreviations
  • is very noise resistant
  • permits long range communication with little power
Listen to a CW call of a radio amateur
Try to send Morse code yourself! This is the link to the Morse tutor