FuSan Dora
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FuSan Dora
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Radio-navigation station. coded Y4 Dora Saint Martin aux Buneaux,
FuSan Dora
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FuSan Dora
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FuSan Dora
Air Doc Target V/16 Central Interpretation Unit (C.I.U.)
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FuSan Dora
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Luftwaffe station FuSan Dora (German Navigation Beam Station).
Y4 "Dora" - Stn-Martin-aux-Buneaux (Haute-Normandie).
3 x Flakstellung.
1 x Peiler Heinrich.
3 x Y.Geräte Fridolin.
5 x Machinenstand.
1 x Feldm.
2 x Unterstand.
3 x 2cm Flack 30. (Maybe more?)
Basically the system functioned as follows:
The Strahlbake was trained over the target, the bomber pilot navigated to stay in the beam, the E-Mess Gerät measured the distance, and various impulses were transmitted to enable the bomber crew to use the X-Uhr for automatic bomb release.
Early 1940 there were 3 Y-stations in Ostfriesland, the Ruhrgebiet and the Schwarzwald, covering the West-German border, plus a training-station near Rechlin. III/KG26 started training on Y-Gerät end August 1940 so the system would not have been used in the French campaign.
Summer 1940 the German Y-multibeam-stations were transferred to the French coast: Anton, Berta and Cicero. Y-attacks on Britain started September 1940 until July 1941 when III/KG 26 was directed to the Russian front, putting the Y-system unused into the cupboard.
In February 1942 a new pathfinder unit was created (ELK 100 => ELK XY =>ELK 17) to give new life to the Y-Verfahren (Kampf). According to Trenkle, this is the period that Anton was reequipped and Dora and Gustav were newly built to support or supersede Berta and Cicero; all three stations with improved Y-dualbeam-beacons. Those three stations operated until August 1944, when taken by Allied forces.
Meanwhile, new stations near Morlaix and Aumale were hardly or not used for some reason or another (Aumale was not ready beyond testing, but why not using the Morlaix Y-station is another puzzle).
It clearly shows the evolution of the Y-stations in France and therefore the bunkers built in them. Anton was a 1940-site, modernized in 1942; hence the different types of Y-line-bunkers. Dora and Gustav were new sites built in 1942, which explains the similarity of their bunkers.
Axishistory forum.
Y4 "Dora" - Stn-Martin-aux-Buneaux. Y - Wotan II.
FuSan Dora
Air Doc Target V/16
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FuSan Dora
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The RAF target map dated 36 June 1942. Showing all the Flak and transmitter positions.
FuSan Dora
Air Doc Target V/16
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FuSan Dora
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The RAF plan showing at least three Flak positions and the targets.
FuSan Dora
Air Doc Target V/16
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FuSan Dora
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These documents were produced by Central Interpretation Unit (C.I.U.).
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RAF Medmenham.
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RAF print library.
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RAF print library.
FuSan Dora
18 March 2024
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FuSan Dora
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FA Sendstelle
Some cal it an FA Sendstelle others a Vf Antenna.
Translation FA Sendstelle - translates to 'Sending Job'. "Signal sending position".
I came upon this position after a search on RELIKTE as I was driving down the coast. From what little I can glean from several sources. It was a signal sending station, where a single straight line passed from hear and across a target. The pilot followed the line and his radio could signal back to receiver. That would calculate where the plane was and where the target was. When the plane was over the target, either the bomb aimer or an automatic device, dropped the bombs. It seems to date from around 1942.
He111.
FuSan Dora
18 March 20024
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FA Sendstelle
East side.
FuSan Dora
18 March 20024
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FuSan Dora
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FA Sendstelle
North side.
FuSan Dora
Rad Nav X system
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FuSan Dora
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Rad Nav X system map of Britain and I have added D Dora Y system, the red dot next to Fécamp. This is the original 1940 X system map.
FuSan Dora
From the INTERNET
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FuSan Dora
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A magazine article showing how it worked. This is a dual beam beacon. or Y-Zwelstrahlbake.
Y4.
Y-Zwelstrahlbake.
FA Sendstelle (Vf Antenna).
FuSan Dora
18 March 20024
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FA Sendstelle (Vf Antenna).
North side.
FuSan Dora
Wotan radar
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FuSan Dora
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Captioned as Wotan radar, it was actually a radio navigation and not radar. This is a picture I have found to show what it may have looked like.
FuSan Dora
18 March 20024
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FA Sendstelle
West side, not absolutely no damage from Allied plane attacks?
FuSan Dora
18 March 20024
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FuSan Dora
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FA Sendstelle
North side. This is the entrance and also steps up to the roof.
FuSan Dora
18 March 20024
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FA Sendstelle
Entrance.
Plan.
FuSan Dora
18 March 20024
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FA Sendstelle
Entrance. Fittings to allow cabling into the bunker.
details
FuSan Dora
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FA Sendstelle
Wall brackets.
FuSan Dora
18 March 20024
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FA Sendstelle
First room.
Plan.
FuSan Dora
18 March 20024
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FA Sendstelle
Second small room.
Plan.
FuSan Dora
18 March 20024
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FA Sendstelle
Main room. What fitted on the plinth, I have no idea. Why the slot and also another in ts side.
Plan.
FuSan Dora
18 March 20024
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FA Sendstelle
Main room.
Plan.
410P9 escape door.
Elevation of the escape.
FuSan Dora
18 March 20024
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FA Sendstelle
Main room. This inner wall is brick.
Plan.
FuSan Dora
18 March 20024
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FA Sendstelle
Way out and there was a door fitted at some time, I could not find hinges, but the door catch is still there.
Door catch
FuSan Dora
18 March 20024
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FA Sendstelle
Camouflage in the entrance.
Plan.
Luftwaffe crew.
FuSan Dora
18 March 20024
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FA Sendstelle
Way out.
Plan.
FuSan Dora
18 March 20024
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FA Sendstelle
Screw picket for the barbed wire defence on the floor.
Barbed wire entanglement around the bunker.
FuSan Dora
18 March 20024
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FA Sendstelle
Steel steps up to the roof, still in good condition.
FuSan Dora
18 March 20024
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FA Sendstelle
An oblong piece of metal, not part of the steel reinforcement. There are about six (tie downs) and may have been used to hold the radio array in high winds.
FuSan Dora
18 March 20024
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FA Unterstand
Either a control bunker or a living bunker, I could not get anywhere near it to look inside. Control; may have been some semi sunk wooden huts with camouflage nets. These FA Unterstands may have been ready rooms/barracks for the Luftwaffe troops running the radio guidance.
FuSan Dora
18 March 20024
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FA Unterstand
Entrance on the left, grass on the roof as camouflage.
FuSan Dora
18 March 20024
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FA Generator
It looks un finished generator house, made in Formstien breeze block and no reinforcement and no roof.
A generator.
details
FuSan Dora
18 March 20024 --------------------------------------------------------------------------------- Betonformstein
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FuSan Dora
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FA Generator
Betonformstein construction.
FuSan Dora
Google
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FuSan Dora
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FA Unterstand
Another I managed to seen it but could not photograph it as its too close somebody's house.
FuSan Dora
18 March 20024
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FuSan Dora
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FA Sendstelle
Different style to the first one.
Plan.
FuSan Dora
18 March 20024
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FuSan Dora
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FA Sendstelle
East side.
Translation FA Sendstelle - Sending Job. "Signal sending position".
FuSan Dora
18 March 20024
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FuSan Dora
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FA Sendstelle
Roof.
FuSan Dora
18 March 20024
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FA Sendstelle
Protected entrance passage.
Plan.
FuSan Dora
Air Doc Target V/16
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FuSan Dora
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FA Sendstelle
An attack by a fighter/bomber on one of the transmitters, I didn't find any evidence of machine gun or cannon damage on the three buildings I looked at??.
Typhoon re loading.
FuSan Dora
18 March 20024
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FuSan Dora
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FA Sendstelle
Entrance passage showing the tiled floor.
Plan.
FuSan Dora
18 March 20024
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FA Sendstelle
Entrance.
Plan.
FuSan Dora
18 March 20024
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FA Sendstelle
Main room showing a wooden frame on the wall.
Plan.
FuSan Dora
18 March 20024
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FuSan Dora
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FA Sendstelle
Another shelf bracket and ventilation above the door.
Plan.
FuSan Dora
18 March 20024
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FuSan Dora
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FA Sendstelle
Main room with a slot leading out into the roof, possibly a drive shaft to the array on the roof?
Plan.
FuSan Dora
18 March 20024
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FuSan Dora
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FA Sendstelle
Outside a set of steel steps up to the roof.
Plan.
FuSan Dora
18 March 20024
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FuSan Dora
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FA Sendstelle
The last step to hold on to to get onto the roof.
FuSan Dora
18 March 20024
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FuSan Dora
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FA Sendstelle
The roof.
FuSan Dora
Google - Relikte ----------------------------------------------------------------------------------------- Air Doc Target V/16
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FuSan Dora
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FA Sendstelle
The Google image from Relikte showing the western side with the first of two flak positions. This one I should have visited, but ran out of time.
Air Doc Target V/16 showing up to three Flak positions and all light Flak, 2cm Flak 30.Possibly six guns.
Ammunition.
FuSan Dora
SHM
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FuSan Dora
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FA Sendstelle
SHM picture taken around 1945 by the French military.
400meters to the east were these two towers and the farm was the camp for the Luftwaffe crew.
FuSan Dora
18 March 20024
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FuSan Dora
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France
Great Britain
