Chart of the Morse code 26 letters and 10 numerals
Cooke and Wheatstone's five-needle telegraph from 1837
1911 Chart of the Standard American Morse Characters
This Morse key was originally used by Gotthard railway, later by a shortwave radio amateur
Morse Telegraph
The first public telegram in America, "What hath God wrought" sent by Samuel Morse in 1844.
Single needle telegraph instrument
Hughes telegraph, an early (1855) teleprinter built by Siemens and Halske
Telegraph key and sounder. The signal is "on" when the knob is pressed, and "off" when it is released. Length and timing of the dits and dahs are entirely controlled by the telegraphist.
Sömmering's electric telegraph in 1809
Morse code receiver, recording on paper tape
Revolving alphanumeric dial created by Francis Ronalds as part of his electric telegraph (1816)
Comparison of historical versions of Morse code with the current standard. Left: Later American Morse code from 1844. Center: The modified and rationalized version used by Friedrich Gerke on German railways. Right: Current ITU standard.
Pavel Schilling, an early pioneer of electrical telegraphy
A U.S. Navy Morse Code training class in 2015. The sailors will use their new skills to collect signals intelligence.
Diagram of alphabet used in a 5-needle Cooke and Wheatstone Telegraph, indicating the letter G
A commercially manufactured iambic paddle used in conjunction with an electronic keyer to generate high-speed Morse code, the timing of which is controlled by the electronic keyer.
Morse key and sounder
A U.S. Navy signalman sends Morse code signals in 2005.
GWR Cooke and Wheatstone double needle telegraph instrument
Cayo Largo Del Sur VOR-DME.
A magneto-powered Wheatstone A. B. C. telegraph with the horizontal "communicator" dial, the inclined "indicator" dial and crank handle for the magneto that generated the electrical signal.
Vibroplex brand semiautomatic key (generically called a "bug"). The paddle, when pressed to the right by the thumb, generates a series of dits, the length and timing of which are controlled by a sliding weight toward the rear of the unit. When pressed to the left by the knuckle of the index finger, the paddle generates a single dah, the length of which is controlled by the operator. Multiple dahs require multiple presses. Left-handed operators use a key built as a mirror image of this one.
Professor Morse sending the message – WHAT HATH GOD WROUGHT on 24 May 1844
Representation of Morse code.
Foy–Breguet telegraph displaying the letter "Q"
Graphical representation of the dichotomic search table. The graph branches left for each dot and right for each dash until the character representation is exhausted.
Wheatstone automated telegraph network equipment
Scout movement founder Baden-Powell's mnemonic chart from 1918
A Baudot keyboard, 1884
Phelps' Electro-motor Printing Telegraph from circa 1880, the last and most advanced telegraphy mechanism designed by George May Phelps
A Creed Model 7 teleprinter in 1930
Teletype Model 33 ASR (Automatic Send and Receive)
Major telegraph lines in 1891
The Eastern Telegraph Company network in 1901
German Lorenz SZ42 teleprinter attachment (left) and Lorenz military teleprinter (right) at The National Museum of Computing on Bletchley Park, England

American Morse Code — also known as Railroad Morse—is the latter-day name for the original version of the Morse Code developed in the mid-1840s, by Samuel Morse and Alfred Vail for their electric telegraph.

- American Morse code

Morse code is named after Samuel Morse, one of the inventors of the telegraph.

- Morse code

At the sending station, an operator would tap on a switch called a telegraph key, spelling out text messages in Morse code.

- Electrical telegraph

This code, first used in 1844, became known as Morse landline code, American Morse code, or Railroad Morse, until the end of railroad telegraphy in the U.S. in the 1970s.

- Morse code

The international Morse code adopted was considerably modified from the original American Morse code, and was based on a code used on Hamburg railways (Gerke, 1848).

- Electrical telegraph
Chart of the Morse code 26 letters and 10 numerals

0 related topics with Alpha