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telegram

n. ~ A text message that is transmitted using a sequence of electrical pulses and then recorded on paper.

Notes: 

Telegraphy describes systems invented in the mid-19th century, especially a system that uses a series of pulses to represent letters, such as Morse code. The message may be handwritten by a telegraph operator listening to a message as a series of long and short tones. Later development recorded the message mechanically. Originally transmitted over wires, telegrams were later sent over the radio.