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St. John's in Division No. 1 (Avalon Peninsula), Newfoundland and Labrador — The Atlantic Provinces
 

Transatlantic Radio Signals

Le premier message radiotélégraphique transatlantique

 
 
Transatlantic Radio Signals Marker image. Click for full size.
By Barry Swackhamer, June 22, 2014
1. Transatlantic Radio Signals Marker
Inscription.  This marker is composed of two side-by-side plaques, one in English and the other in French.
(English)

At Signal Hill on 12 December 1901, Guglielmo Marconi and his assistant, George Kemp, confirmed the reception of the first transatlantic radio signals. With a telephone receiver and a wire antenna kept aloft by a kite, they heard Morse Code for the letter “S” transmitted from Poldhu, Cornwall. Their experiment showed that radio signals extended far beyond the horizon, giving radio a new global dimension for communication in the twentieth century.


(français)
Le 12 décembre 1901, à Signal Hill, Guglielmo Marconi et George Kemp, son adjoint, captent le premier message radiotélégraphique d’outre-atlantique, munis d’un récepteur téléphonique et d’une antenne montée sur un cerf-volant, ils entendent le signal de la lettre S, en Morse, transmis à partie de Poldhe, comté de Cornwall. La preuve est ainsi acquise que les signaux radiotélégraphiques voyagent au-delà de l’horizon, conférant ainsi à la radio une dimension planétaire importante pour les communications
Le premier message radiotelegraphique transatlantique Marker image. Click for full size.
By Barry Swackhamer, June 22, 2014
2. Le premier message radiotelegraphique transatlantique Marker
au XXᵉ siècle.

 
Erected 1985 by Institute of Electrical and Electronics Engineers.
 
Topics. This historical marker is listed in this topic list: Communications.
 
Location. 47° 34.227′ N, 52° 40.88′ W. Marker is in St. John's, Newfoundland and Labrador, in Division No. 1 (Avalon Peninsula). Marker is on Signal Hill Road. Touch for map. Marker is in this post office area: St John's, Newfoundland and Labrador A1A, Canada. Touch for directions.
 
Other nearby markers. At least 8 other markers are within walking distance of this marker. Fever Hospital (a few steps from this marker); First Transatlantic Wireless Signal (a few steps from this marker); Peacetime Use (within shouting distance of this marker); Battle of Signal Hill (within shouting distance of this marker); Cabot Tower (within shouting distance of this marker); Noon Day Gun (within shouting distance of this marker); Fishery (about 90 meters away, measured in a direct line); Swiling (about 90 meters away). Touch for a list and map of all markers in St. John's.
 
More about this marker. This marker is located in the Signal Hill National Historic Site parking lot.
 
Also see . . .  Marconi's First Transatlantic Wireless Experiment. It was on the 12th hour of the 12th day of the 12th month that Marconi received the first transatlantic radio signal on Signal Hill in 1901. His claim was met with some scepticism; Edison thought Marconi may have heard static instead of signals
Transatlantic Radio Signals Marker image. Click for full size.
By Barry Swackhamer, June 22, 2014
3. Transatlantic Radio Signals Marker
Cabot Tower in the background.
and the scientists, unaware of the ionosphere, thought the earth's curvature would preclude distant transmission of radio signals.
(Submitted on November 16, 2014, by Barry Swackhamer of Brentwood, California.) 
 
Guglielmo Marconi, Radio Transmission Pioneer image. Click for full size.
By Pach Brothers via U.S. Library of Congress, 1908
4. Guglielmo Marconi, Radio Transmission Pioneer
 
 
Credits. This page was last revised on December 8, 2018. It was originally submitted on November 16, 2014, by Barry Swackhamer of Brentwood, California. This page has been viewed 688 times since then and 88 times this year. It was the Marker of the Week December 9, 2018. Photos:   1, 2, 3. submitted on November 16, 2014, by Barry Swackhamer of Brentwood, California.   4. submitted on December 8, 2018, by J. J. Prats of Powell, Ohio. • Andrew Ruppenstein was the editor who published this page.
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Jul. 14, 2020