Showing 7 items
matching morse telegraph key
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Derrinallum and Lismore Community Association - History Group
Telegraph Key
... morse telegraph key... in Victoria on Saturday June 30 1962. This key sent the last Morse... June 30 1962. This key sent the last Morse Telegraph message ...Lismore Post Office was opened in the year 1864. In the year 1883 a telegraph system was introduced to Lismore, this service carried on until 1888. In 1914 the Lismore Post Office was opened as an Official Post Office and the Morse system was reintroduced. This service functioned until the closure of the system in Victoria on Saturday June 30 1962. This key sent the last Morse Telegraph message in Victoria.Wooden "T" frame supporting a square bakelite shape. Mounted on this are two metal keys. The larger lever has a rounded handle, to operate the lever, controlled by a spring. The smaller lever communication, morse key, telegraph key, morsecode key, morse telegraph key -
National Wool Museum
Machine - Morse Code Machine
... A telegraph key or Morse key is a specialised electrical...-and-the-bellarine-peninsula A telegraph key or Morse key is a specialised ...A telegraph key or Morse key is a specialised electrical switch used by a trained operator to transmit text messages in Morse code in a telegraphy system. Keys are used in all forms of electrical telegraph systems, including landline (also called wire) telegraphy and radio (also called wireless) telegraphy. An operator uses the telegraph key to send electrical pulses of two different lengths: short pulses, called dots or dits, and longer pulses, called dashes or dahs. These pulses encode the letters and other characters that spell out the message.Metal device with black knob mounted on a wooden base. A plaque with printed text is also attached to the base.Printed: GIVE A SERIES OF DASHES INSTEAD / OF A STEADY EXPOSURE WHEN CALL- / ING FOR LIGHT, OR SHOWING LIGHT. / USE THE PLUG IN No. 1 / SOCKET AS LONG AS THE / LIGHT IS GOOD ENOUGH. / THEN CHANGE TO No. 2 THIS WILL / LENGTHEN THE LIFE OF BOTH BULB / AND BATTERY.morse code, communication, telegraph key, messages, pulses -
National Communication Museum
Equipment - Morse key, Postmaster-General's Department, circa 1920
... A telegraph or Morse key, sends a series of electrical... melbourne A telegraph or Morse key, sends a series of electrical ...A telegraph or Morse key, sends a series of electrical signals down a telegraph line or via radio frequencies; the signals are interpreted as Morse code, a binary form of language constructed of 'dots and dashes', combinations of which correspond to letters of the alphabet. The motion of the key acts to complete an electrical circuit between the sender and receiver, producing a short pulse 'dot' or longer 'dash,' the space between the code indicates a broken current or wave.Device used to transmit telegraphic messages in Morse code through the manipulation of electric signals. The metal 'key' sits in a central bracket on which it moves up and down aided by a spring, controlled by an operator pushing the black Bakelite knob on the protruding end of the device. The motion presses the key onto a circular metal disc, completing the circuit and sending an electrical pulse to the receiver. The apparatus is secured to a wooden base with wires attached to the terminals; a cut out section of the base suggests wires may have entered through this area, attaching to a battery.Printed ink on base: "PMG"telegraph, telegraphist, morse code, mechanisation -
Warrnambool and District Historical Society Inc.
Morse key, C 1930
... telegraph telegraph key morse code ADMY.PATT No 7681 KEY MORSE SERN ...The Morse telegraph system had its beginnings in 1836 when Samuel Morse, Alfred Vail and Joseph Henry developed an early model of the system. There are a number of variations on the machine but the operating system is very similar in all and the language is a standardised international code which has been in operation since the 1860's. Morse code consists of five elements, dots, dashes, and gaps of one , three and seven units in length. It is still in use to this day and has been applied to other systems of communication such as amateur radio, mobile phones and communication systems for disabled people. This particular telegraph key possibly has post office or naval origins.Morse code was an important invention in world communication systems and this machine therefore has important social and research significance. It is useful as an interpretive item.This instrument sits on a black rectangular base of black bakelite. The mechanism ids held in place by three larger metal screws and two smaller ones on the upright section from the base.The movable part is metal with the attached handle a similar black material as the base.ADMY.PATT No 7681 KEY MORSE SERN PL 23780 Rocker Front contact. Lift @ turn on one of the screws on the bar.history of warrnambool, rocker telegraph, telegraph key, morse code -
Warrnambool and District Historical Society Inc.
Morse code key, Mid 20th century
This is a Morse Code key. Morse Code is a method of transmitting text information using short and long signals (‘dots and dashes’). It is named after Samuel Morse, the inventor of the telegraph and was developed in the 1860s. It was used extensively in the 1890s for early radio communication before it was possible to transmit voice and continued to be used in the 20th century along with voice transmission , especially by amateur radio persons. It was also used in military and naval communication but not so much today. It is believed that this Morse Code key belonged to Ted Salamy, a jeweller and the first person in Warrnambool to hold an amateur radio licence (1924 Call Sign A3AJ, the 35th licence issued in Victoria).This Morse Code key is of interest as an object more used in the past, especially by amateur radio persons. It is believed to have been the property of Ted Salamy, the first person in Warrnambool to hold an amateur radio licence. This is a metal Morse Code key with an oval metal base. It has three screws inserted in the base and two more screws attached to the sides of the base. There is a key lever on top of the base and this is adjustable. The hinge on which the key lever sits is missing. The lever has a round black knob at one end. ‘Made in U.S.A. H15.682’ Wm.M. Nye Co Inc. Bellevue W.A.’ morse code key, ted salamy,, history of warrnambool -
Flagstaff Hill Maritime Museum and Village
Functional object - Morse Training Key, 1950s
The set consisted of a key battery and buzzer it was used for training potential radio operators in the Morse code. It was manufactured by blue point in the 1950s. The company was founded in the Sydney suburb of Erksville in 1936 by a German immigrant, Frederick Boyd Dirks who named his company F Dirks. The company produced Bakelite products such as ashtrays single strip heaters, and Morse key components, In 1946 the company named was changed to Blue Point products Pty Ltd. The name was inspired by the name “Blau Punkt” a German electrical supplier. in 1973 the company was purchased by Gerard Industries which was known for its line o Clipsal products, An item made in Australia for training purposes of new radio operators and is significant in that it is part of Australia's social history and shows the development of Australian electrical manufacturing. Australian blue point telegraph practice /training set XX20A circa 1950 Bakelite, stamped XX20A under, three terminals - two marked "+" and "-".flagstaff hill, warrnambool, shipwrecked-coast, flagstaff-hill, flagstaff-hill-maritime-museum, maritime-museum, shipwreck-coast, flagstaff-hill-maritime-village -
National Vietnam Veterans Museum (NVVM)
Equipment - Equipment, Army, Trainer - Morsecode
Metal, plastic, pale blue paint, black and silver knobs, On/Off switch, morse keyNS No. 5805-99580-8558 Key telegraph F.I.L.71 Ser.No 2353signals, trainer