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Marconi wireless telegraphy at sea

node

Titanic carried one of the most powerful Marconi installations afloat — a 5 kW rotary spark-gap set with call sign MGY, guaranteed to about 250 nautical miles and reaching far further at night. Crucially the operators worked for the Marconi company, not White Star: their paid business was passenger telegrams, and ice reports competed with that traffic. Wireless summoned the Carpathia and saved everyone who survived, and its gaps — a set switched off aboard the Californian, warnings that never reached the bridge — shaped the reforms that followed. Contrary to legend, Titanic's use of SOS alongside CQD was not the signal's first use.

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Evidence · 2
Timeline

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Connections · 1
Assembled narrative · 1

Assembled from 23 blocks · 2 evidence · 31 related

  1. Story
  2. Titanic carried one of the most powerful Marconi installations afloat — a 5 kW rotary spark-gap set with call sign MGY, guaranteed to about 250 nautical miles and reaching far further at night. Crucially the operators worked for the Marconi company, not White Star: their paid business was passenger telegrams, and ice reports competed with that traffic. Wireless summoned the Carpathia and saved everyone who survived, and its gaps — a set switched off aboard the Californian, warnings that never reached the bridge — shaped the reforms that followed. Contrary to legend, Titanic's use of SOS alongside CQD was not the signal's first use.
  3. Knowledge
  4. Marconi wireless telegraphy at sea
  5. Jack Phillips (John George Phillips)
  6. Connections
  7. RMS Titanic
  8. International Convention for the Safety of Life at Sea, 1914
  9. Jack Phillips (John George Phillips)
  10. Baltic's ice warning handed to Ismay and pocketed
  11. Mesaba reports heavy pack ice and bergs directly ahead
  12. Californian's ice message cut off — 'keep out, I am busy'
  13. First distress call transmitted — CQD, later SOS
  14. US Senate report submitted
  15. International Convention for the Safety of Life at Sea signed in London
  16. Marconi wireless telegraphy at sea
  17. Mesaba reports heavy pack ice and bergs directly ahead
  18. Californian's ice message cut off — 'keep out, I am busy'
  19. First distress call transmitted — CQD, later SOS
  20. Titanic founders
  21. Evidence
  22. Titanic's Marconi station used call sign MGY; the operators were Marconi company employees whose principal work was passenger telegram traffic; the distress signal was sent first as CQD and subsequently as SOS.
  23. Required lifeboat and raft capacity for all persons carried, lifeboat drills, watertight subdivision standards, a continuous radio watch at sea, and the establishment of a North Atlantic ice patrol; entry into force was overtaken by the First World War and its substance carried into SOLAS 1929.
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No public Signals are attached to this object. Signals show what changed and when it was observed — never a direction or a rank.

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/atlas?object=TECH_MARCONI_WIRELESS&experience=TECH_MARCONI_WIRELESS