Die010 Mont Robin

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Die010 Mont Robin

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Die010 Mont Robin

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On a hill to the left of Dieppe is a large hill, almost plateau and from the Dieppe to Pourville-sur-Mer road looking south Die010 runs all the way to the main D925 Route de Dieppe. A vast area with scattered bunkers, defending the Luftwaffe radar that was situated there. Before the Germans arrived, the French had a batterie of heavy guns up here to protect Dieppe's left flank. Now a Golf course to its right flank and quite a lot of ground work carried out, it may look a little different today.

French artillery soldiers.

Luftwaffe guard.

Radar operators

Die010 Mont Robin

Geoportail 1945

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Die010 Mont Robin
Plan of the whole site

Details

Radar Station "Dickhauter"
15./Luft. Nachr,Rgt.52.
1 x R114A neu
1 x L485 (2) Mammut radar bunker.
1 x R501 Group shelter.
1 x R621 Group shelter.
2 x R622 Twin group shelter.
9 x R630 Machine gun casemate with an armoured plate.
1 x R631 Casemate for a 4.7cm Festungspak(t).
1 x R632 Three embrasured steel turret bunker.
1 x R633 Emplacement for an M19 mortar.
2 x R634 Six embrasured steel turret bunker.
1 x R644 Six embrasured steel turret bunker.
1 x R660 Accumulator charging station.
15 x Vf2a Group shelter.
1 x Vf7a Ammunition bunker.
1 x Vf51a Half group shelter.
1 x Vf54a Anti-tank gun garage bunker with shelter for six men.
1 x Wasserbunker.
1 x V229 (2x) Radar concrete base (Würzburg Reise Fu.SE 65).
3 x Vf67 Tobruk for a tank turret.
4 x Vf58c Tobruk.
10 x Feldm Just small shelters/bunkers.
1 x Soldatenheim/barracks
1 x Ringstand Gr.W, 4.7cm Pak 36(t)
6 x 2cm Flak.
1 x 5cm M19 Mortar.
2 x Pz.T. FT17 - 3.7cm 144(f)
1 x Radar, Fu.MG F.
1 x (2 x) Würzburg Riese Fu.SE65
15./Luft.Nachr.Rgt.52

R114A neu, six embrasured steel turret.

L485 Mammut radar bunker.

R501

R621 group shelter.

R622 twin group shelter.

R630 machine gun casemate with steel plate.

Die010 Mont Robin

Geoportail 1945

Information

Die010 Mont Robin
Plan

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A plan of the area we covered on both our trips, 2007 & 2012. The routes we covered were slightly different and as its a few years ago I will do my best to name the bunkers correctly.

R631 casemate for a 4.7cm Festungspak(t).

There were at least two FUMO 214 Wurzburg Riese radars.

Mammut radar (Hoarding the Allied code name).

Die010 Mont Robin

23 April 2007

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Die010 Mont Robin

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The Mammut Fu.MO 52 radar in the far distance. British code name "Hoarding" as it looked like a massive advertising hoarding. The way it worked is that it could search in front and behind but not at the sides. The altitude of the radar was 8,000m (24,00ft) x range of 300km (186mls). It could scan from left to right and up and down not by moving but by using different arrays of its large frame.

Mammut Fu.MO 52 radar range.

Mammut Fu.MO 52 radar.

Wiring of the Mammut arrays.

Die010 Mont Robin

23 April 2007

Information

Die010 Mont Robin
R622

Details

Crew room. Anti gas. The half round piece of metal coming out of the wall is to hold the spare anti gas filters. Above would be the 1ML 4 HES 1.2meters-cubed pump filter. A filter would be set into the machine like a cassette and the handle turned. By keep turning the handle it increases the air pressure inside and seals the bunker from the ingress of gas. The air passing through the filter is cleaned and the air can be breathed quite freely.

Plan.

Filters.

1 ML 4 HES 1.2m3. MKB Bunkertour.

Die010 Mont Robin

03 March 2012

Information

Die010 Mont Robin
R630

Details

Gun room looking out. The gun port has a heavy closure that can be swung back and the machine gun placed through the aperture. Then the gunner can fire at his enemy, the second window is for the guns commander, who would spot for the machine gunner, also the Tobruk above and behind the bunker, by using a speaker tube, could call fire orders also down to the crew.

The gun room inside the 78P9 Pz schartsnplattemg for an MG.34 machine gun.

Heavy machine gun for a fortress mounting.

Die010 Mont Robin

03 March 2012

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Die010 Mont Robin
R630

Details

Crew room. This is where they would eat, sleep, relax and be ready for instant battle to protect the radar sites that these bunkers surround.

Cupboard for all their kit.

Bunks and folding table would be used.

They would be allowed a dog, An attempt at a small recon landing in Normandy in 1942 was foiled by a dog barking, so Hitler said that the men could keep a dog.

Die010 Mont Robin

MKB Bunkertour

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Die010 Mont Robin
Plan of an escape

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In an emergency: -
First a 410P9 door would be opened, then crawl in and remove the two rows of several galvanised slats. Then gravel or sand had been placed into the outer escape shaft to stop an enemy getting in and so all this has to be removed by hand. Quite a substantial task and only then could you crawl through the tunnel (about 2meters) and then negotiate a 90° turn and climb up a set of steel ladders to the outside.

410P9 escape door.

Plan of an escape.

Steel ladder.

MKB Bunkertour.

Die010 Mont Robin

03 March 2012

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Die010 Mont Robin
R630

Details

The entrance with the close combat embrasure that if attacked would have taken the attackers legs off. Then a drain to stop rain water entering the bunker. The step into the bunker, gas is heavier than air and tends to lie down just around ground level, so the step would help to stop old gas entering into the stair well. Just inside a speaking tube to contact the men inside and a small vent. Althogh gas was never used but in case it was used it had to be built into the defence.

Outside drain.

Sprachrohr speaking tube.

Die010 Mont Robin

03 March 2012

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Die010 Mont Robin
Mammut Radar

Details

L485 (2) Mammut radar bunker: -
There are two types of L485 bunkers, this one (2) and another more square type (1).

L485 (2) Mammut radar bunker.

Controls in the compressor room from plan 0-43330 Mammut F.

L485 (1) type

Die010 Mont Robin

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Die010 Mont Robin
Mammut Radar

Details

L485 (2) Mammut radar bunker: -
The Mammut Fu.MO that the British code named it "Hoarding", as it looked like a massive advertising hoarding. The way it worked is that it could search in front and behind but not at the sides. The altitude of the radar was 8,000m (24,00ft) x range of 300km (186mls). It could scan from left to right and up and down not by moving but by using different arrays of its large frame (Phased array). A very complicated structure, it was immovable but to get the radar screen to sweep from L to R, it needed to move connections from the different sensors. So an arc of about 80° to 130° (I think) looking either forward or behind. And then by electronically switching from sensors to sensors across the array, a scan could be generated without the large panel needing to move. It did suffer from a blind spot and that was about 50° on the left and the same on the right. But by sitting Mammut's in a a chain, they would over lap at a pre determined distance.

Plan L485 (2).

An arc of about 80° to 130° in front and rear.

Bomber stream.

Die010 Mont Robin

Google

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Die010 Mont Robin
Mammut Radar

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L485 (2) Mammut radar bunker: -
By dropping a plan over the top it gives an idea of how the bunker was formed. As bunkers go, its quite large with three main rooms.
Starting from the top to the bottom:
a - Compensator.
b - Gas Lock.
c - Antenna Room.
d - Workshop.
e - Emergency Current.
f - Ventilation.
g - Gas Lock.
h - Heating.
i - Engine Room.
j - Fuel Storage.
k - Close Combat Defence.
Blue arrow - Entrance.
Yellow arrow - Machinery entrance.
Red arrow - large air vent.

Large generator.

Die010 Mont Robin

AIR 40/1927 from original O-43331

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Die010 Mont Robin
Mammut Radar

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Grundrise - Floor plans: -
Abluft - Exhaust air.
Nutstrom Raum - Slot current space.
Vorhof - Forecourt.
Heizung Lüftung - Heating ventilation.
Umformer - Converter.
Gasschleuse - Gas lock.
Verteldigung - Defence.
Betriebs Raum - Operating room.
Lager - warehouse (storage).
Kompens Raum - Compensated space.

Die Schalttatel -
The switch panel.

Die Abgleichmittel -
The matching means.

Die steuersaule -
The tax column (control?).

Die010 Mont Robin

AIR 40/1667

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Die010 Mont Robin
Mammut Radar

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Air Scientific Intelligence Technical Translation. No.1. Mammut F.

30 AU Commando collected secrets throughout WW2.

They often were in advance of the front line troops and captured towns, villages, bunkers, HQ's.

They captured Karl-Wilhelm von Schlieben in his HQ in Cherbourg.

Die010 Mont Robin

AIR 40/1667

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Die010 Mont Robin
Mammut Radar

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The scientist R.V. Jones worked in Military Intelligence at the highest level and in his book "Most Secret War" he tells about visiting fighter squadrons and asking them to attack certain radars. Since then I have found out that six Hawker Typhoons were stationed at RAF Holmsley South in the south of England that were used, away from their squadron to attack German radars along the French coast before D-Day. It would be nice to know if these were the pilots that he talked to.

Prof. R.V.Jones.

Typhoons on and after D-Day.

Die010 Mont Robin

ADM 199/1654

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Die010 Mont Robin
Mammut Radar

Details

A very low level attack by RAF Hawker Typhoons on the radar at Mont Robin. The small white glow low down in the photo is a cannon shell tracer round, just before it hit the radar. Right behind the radar are three 2cm Flak guns and out on the flank another three. A hot reception.

The Typhoon gun camera sequence photos.

Hawker Typhoon.

Die010 Mont Robin

03 March 2012

Information

Die010 Mont Robin
R630

Details

Crew room still with its pipe work in place. Escape on the left and close combat defence window covering the stairs on the right. The rectangle on the far wall was where the anti gas pump would have been placed.

410P9 door covering the escape.

ML 4 HES 1.2m3 (cubed) gas filter pump. MKB Bunker tour.

Wall mounting bracket. MKB Bunker tour.

Die010 Mont Robin

03 March 2012

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Die010 Mont Robin
R630

Details

At the entrance, two small niches, one for a voice speaking tube and the other maybe a light switch and a vent to suck in fresh air to the bunker and gun room, that when the gun is firing, the anti gas filter would be used to clear away the smoke from the gun room.

Sprachrohr speaking tube.

Light switch.

Extraction steel vent.

Die010 Mont Robin, StP Gruppe Dieppe, KVA E2

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Die010 Mont Robin