Page 243 - Electromechanical Devices and Components Illustrated Sourcebook
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Chapter 11  Acoustic Devices 205

                                      Alphabet                              Numbers
                               A                                    0
                               B                                    1
                               C                                    2
                               D                                    3
                               E                                    4
                               F                                    5
                               G                                    6
                               H                                    7
                               I                                    8
                               J                                    9
                               K
                               L
                               M
                               N
                               O
                               P
                               Q
                               R
                               S
                               T
                               U
                               V
                               W
                               X
                               Y
                               Z


                           1. A dash is equal to three dots.
                           2. The space between parts of the same letter is equal to one dot.
                           3. The space between two letters is equal to three dots.
                           4. The space between two words is equal to five dots.
                           Figure 11-47 Morse Code







                                        Key                                   Key





                                                           Line
                                        Send/Receive                  Send/Receive
                                          Switch                         Switch


                                       Sounder                            Sounder




                                          Battery
                                                                     Earth Ground




                                        Earth Ground
                               Figure 11-48 Basic Telegraph System
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