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[Karl W4KRL]

Sunday marks the 100th anniversary of the sinking of the Titanic. Wireless
played an important role in the rescue of passengers. The IEEE has an
article about maritime radio; be aware that it takes minutes for the
timeline to appear:

 

http://spectrum.ieee.org/static/the-titanics-role-in-radio-reform/?utm_sourc
e=techalert
<http://spectrum.ieee.org/static/the-titanics-role-in-radio-reform/?utm_sour
ce=techalert&utm_medium=email&utm_campaign=041212>
&utm_medium=email&utm_campaign=041212

 

The attached schematic purports to be that of the Marconi station on the
Titanic. Note that most of the schematic is devoted to power supplies for
the main and emergency transmitters. The main transmitter was powered by a
5KW dc-to-ac motor-alternator feeding a "Discharger" spark gap. There is no
motor shown for the spark gap so I assume it was static. The emergency
transmitter used a storage battery feeding a vibrator-type step-up coil with
a spark gap right on the secondary. It appears that both the main and
emergency receivers relied upon dry cells to reset the coherers.

 

Some interesting links:

 

The RMS Titanic Radio Page http://www.hf.ro/

 

The Marconi Wireless Installation in R.M.S. Titanic
http://marconigraph.com/titanic/wireless/mgy_wireless.html

 

Titanic Tragedy Spawns Wireless Advancements
http://www.audiouk.com/vintage/titanic.htm

 

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