|Morse Transmitter MG 23 (1950)|
These devices were mainly used for learning and exercising the Morse code. The Morse transmitter sends the Morse codes punched into a Wheatstone paper tape over a transmission line or over a radio channel to a receiver which records the transmitted Morse codes.
The holes punched into the tape are sensed by feeler levers, which close an electric contact when they sense a hole. By means of a relay circuit it is detected, whether the two holes are one above the other or are separated by one position. Correspondingly a short or long sound signal is sent on the line. The transmission speed can be adjusted between 60
to 220 characters per minute. In addition, the pause between the characters can be adjusted
The Morse transmitter was not only used for learning and exercising, but also for regular trans-
|Demonstration of the morse devices|