[600MRG] TM1LY and TM100LY Lafayette Stations on the Air.

Fri Dec 18 21:37:27 EST 2020

 Wow that must have been LOUD. I suppose all the plumbing was to vent the ozone?How did they key it?
That setup is a lost art for sure. 

    On Friday, December 18, 2020, 6:39:19 PM EST, D.J.J. Ring, Jr. <n1ea at arrl.net> wrote:  

 Hello Bart,
You didn't ask this question but I'm answering it again.
http://www.theradiohistorian.org/transmitters/poulsen.jpg
A Poulsen arc converter transmitter, seen in this photo, created a continuous wave through the creation of a sustained high-frequency oscillating arc enclosed in a magnetic field.   
This 1 megawatt Poulsen arc converter was built for the US Navy by Federal Telegraph Company in 1919.  It was installed in Croix d'Hins, France..

https://radio-club-f5kan.jimdofree.com/page-d-histoire/  One photo of the station shows four towers in a quadrangle, there is also a photo taken from a tower by men doing maintenance.

I'm guessing based on similar stations the antenna was four towers and a top hat stretched in some manner between the towers.
If you get a photo of the towers, post it here.
73DR

RADIO CLUB F5KAN The compass rose
THE CROIX D'HINS RADIO STATION

 In 2020 it is the 100th anniversary of the largest wireless telegraphy station in the world which was located at the Croix d'Hins Commune of Marcheprime. Operational station from 1920 to 1944.

                                                                                                          Photo of General Pershing

History: (source wikipedia)

As of the declaration of war in August 1914, the telephone links by submarine cables were cut, it then became essential for war needs to set up replacement solutions and radio telegraphy, which was in full development, came to the fore. point to fill the lack of land links. The Americans go to war in 1917. General Pershing commands the American expeditionary force. A secure and permanent communication channel between Europe and the United States must be made operational quickly. A new radiotelegraphy station is being studied at the initiative of General Pershing in order to allow reliable and uninterrupted communications between the American armed forces engaged in France and the United States. The French delegation proposes the Croix d'Hins site near Bordeaux. This site is accepted by the inter-allied commission responsible for the file because it has many advantages:
    * it is far from the combat zones
    * it is near the port of Bordeaux and outside an urban area (Landes forest),
    * it can be connected to the rail network via the Croix d'Hins station,
    * it can be supplied running from hydroelectric dams on the Dordogne and in particular the Tuilière dam upstream from Bergerac

Finally, given the position of the North American continent, it was preferable to choose a place near the West Atlantic coast of our country. The 486 hectares are quickly acquired for the construction of the station. In memory of the Franco-American friendship, the station will bear the name of Radio Bordeaux Lafayette. Work began on March 7, 1918. Not only the antennas and the transmitter had to be built, but also technical buildings, a water tower, a workshop, a dining hall, staff quarters and even a school. A rail connection is made at Croix d'Hins station, in order to transport heavy parts from the port of Bordeaux. The railway line will pass between the pylons and penetrate into the main building. 750 Marines are sent to France for the assembly of the equipment and the elevation of the antenna pylons which will begin in May 1918. The end of the war on November 11, 1918 sees a stop of work whereas only 6 of the 8 pylons are built ( 250m high). Franco-American discussions resumed at the beginning of 1919 and a new approval was signed in February 1919. The last pylons were put in place, the general installation completed and the acceptance tests completed in April 1920.The first message was sent on August 21, 1920 . The official inauguration took place on December 16 of that same year.

In 1940, the Germans seized the facilities. Kriegsmarine soon realized the usefulness of very long waves for communicating with submarines while diving. The station will operate until its destruction by the Germans in 1944, when the allies arrive. The last pylon will be brought down on November 21, 1953.

                                     The radio station ==>

thanks to Philippe for the info

Photo transmitted by the historian of the US MARINES (thanks Annette).

and belonging to: "Marine Corps Archive and Special Collections, Quantico, Virginia"
"Marine Corps Archive and Special Collections, Quantico, Virginia"
The remaining buildings

THE EXHIBITION - (1 click on the arrowed rectangle to enlarge, escape to exit)

Go back to the 1940s

Small simulation of Bordeaux Lafayette station by Radio club d'Arcachon and F6LIA

the first TV sets

The first TV sets, a cathode ray tube and a disc machine from 1930. reconstructed by the association for the conservation of mechanical television heritage ( http://la-radiovision.fr )

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