International Morse Code
K. J. Halliwell                                                             

Click here to hear an example of International Morse Code -- one of many types of radio transmissions monitored and recorded by the Communication Technicians in USS Liberty's Research Department.

In this example, the coded message is being sent at a relatively slow-speed.  Typically, Morse code operators manually sent code much faster, or used a machine to send Morse coded messages at speeds greater than many human operators could achieve over a long period of time.  Additionally, the Morse code messages were often random groups of numbers or letters that were actually messages enciphered to appear like random number or letter groups. 

Can you decode/read the message?  Below is a graphical representation of the dots and dashes (dits and dahs) in the message -- click here for more information :

.._    ...    ...       ._..    ..    _...    .    ._.    _    _._ _

Click here to hear a simulation of USS Liberty's radio central sending a Morse code test message consisting of three "V's" followed by her radio callsign NIRY.  The message text is: V V V DE NIRY NIRY NIRY.  (The DE is Morse code shorthand for the English word "from", which is "de" in Latin.)
To hear Morse code sent at various speeds, the ARRL (American Radio Relay League) provides an excellent source of Morse encoded text, for training purposes: