Wireless telegraphy

wireless telegraphradiotelegraphywirelessradiotelegraphradio telegraphyradio telegraphW/TradioMarconi wirelessradiotelegraphic
Wireless telegraphy or radiotelegraphy is transmission of telegraph signals by radio waves; Before about 1910 when radio became dominant, the term wireless telegraphy was also used for various other experimental technologies for transmitting telegraph signals without wires, such as electromagnetic induction, and ground conduction telegraph systems.wikipedia
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René Plaissetty

This eventful film (one sees in particular a shipwreck) receives a very favorable public and critical reception, due to the originality of the subject and the dramatic use of a new mode of communication, the Wireless telegraphy.

Antique radio

radio setradiowireless
The first radio receivers used a coherer and sounding board, and were only able to receive CW continuous wave (CW) transmissions, encoded with Morse code (wireless telegraphy).

Radio broadcasting

radio stationradio stationsstation
The earliest radio stations were radiotelegraphy systems and did not carry audio.

Women in early radio

Eunice Randall
The age of radio communication began with the development of wireless telegraphy around 1900, in which Morse code could be transmitted over large distances using simple spark gap or carbon arc transmitting equipment, and various types of detectors for reception.

Naval Postgraduate School

Navy Postgraduate SchoolU.S. Naval Postgraduate SchoolNaval Post Graduate School
233, which renamed the school the Postgraduate Department of the United States Naval Academy. The order established courses of study in ordnance and gunnery, electrical engineering, radio telegraphy, naval construction, and civil engineering and continued the program in marine engineering.

Eilvese transmitter

EilveseCentral Mast Eilvese
Eilvese transmitter was an early long-distance radiotelegraphy station at Eilvese, Germany owned by Transradio AG, used for transmission of telegrams.

Italian ironclad Sardegna

She was armed with a main battery of four 13.5 in guns and had a top speed of 20.3 kn—albeit at the cost of armor protection—and she was one of the first warships to be equipped with a wireless telegraph.

Kunibert Randewig

At the start of World War II, Randewig was already a veteran of Soviet Wireless telegraphy traffic and a supporter of decentralisation.

Radio in Argentina

radioArgentine radioradio broadcasting
Radio broadcasting enjoys a long and varied history in Argentina, tracing its origins to a 1910 stay in the southside Buenos Aires suburb of Bernal by Guglielmo Marconi, inventor of the wireless telegraph.

Text messaging

text messagetextingtext messages
In the late 19th century, the wireless telegraphy was developed using radio waves.

The Great Abraham Lincoln Pocket Watch Conspiracy

Meanwhile, while conversing with Nikola Tesla over a wireless telegraph, Airship One intercepts a mysterious exchange between five anonymous "gentlemen".


DergaonDoss & Co.Golaghat city
Golaghat has the inceptive post/mail service and telegraphic communication systems in Assam going back to 1876.

Édouard Branly

Edouard BranlyBranlyBranly effect
He is primarily known for his early involvement in wireless telegraphy and his invention of the Branly coherer around 1890.

Signal strength and readability report

five by five5 by 5Readability and signal strength report
A signal strength and readability report is a standardized format for reporting the strength radio signal and the readability (quality) of the radiotelephone (voice) or radiotelegraph (Morse code) signal transmitted by another station as received at the reporting station's location and by their radio station equipment.

Sinking of the RMS Titanic

sinking of the RMS ''Titanicsinkingsinking of the ''Titanic
They used distress flares and radio (wireless) messages to attract help as the passengers were put into lifeboats.

List of World War II British naval radar

Type 262Type 276Type 286
These sets were initially numbered as wireless telegraph (w/t) sets, but a distinguishing prefix of "2" was soon added.

Massie Wireless Station

The Massie Wireless Station (PJ) was built in Point Judith, Rhode Island, in 1907 and may be the oldest surviving working wireless station in the world.


A tikker, alternately spelled ticker, was a vibrating interrupter used in early wireless telegraphy radio receivers such as crystal radio receivers in order to receive continuous wave (CW) radiotelegraphy signals.

Magnetic detector

The magnetic detector or Marconi magnetic detector, sometimes called the "Maggie", was an early radio wave detector used in some of the first radio receivers to receive Morse code messages during the wireless telegraphy era around the turn of the 20th century.

Vintage amateur radio

ham radio operatorsvintagevintage and military amateur radio enthusiasts
Popular modes of operation include speaking over amplitude modulation (AM), and communicating using Morse code through continuous wave (CW) radiotelegraphy.

Women's Royal Australian Naval Service

In 1941, fourteen members of the civilian Women's Emergency Signalling Corps (WESC) were recruited for wireless telegraphy work at the Royal Australian Navy Wireless/Transmitting Station Canberra, as part of a trial to free up men for service aboard ships.

Grimeton Radio Station

GrimetonVLF transmitter GrimetonGrimeton Radio Station, Varberg
Grimeton Radio Station in southern Sweden, close to Varberg in Halland, is an early longwave transatlantic wireless telegraphy station built in 1922-1924, that has been preserved as a historical site.

Samoa Expeditionary Force

a similar force
The Samoa Expeditionary Force (SEF) was a small volunteer force of approximately 1,400 men raised in New Zealand shortly after the outbreak of World War I to seize and destroy the German wireless station in German Samoa in the south-west Pacific.

Luftnachrichten Abteilung 350

Chi-StelleLuftwaffe Signal Intelligence ServiceChi-Stelle OB.d.L
During this period the Wireless telegraphy section was working to annihilate the RAF Fighter Command.

British Broadcasting Company

BBCBritish Broadcasting Company Ltd.B.B.C.
This invention was followed by the wireless telegraph which was then placed under the Wireless Telegraphy Act 1904.