Chapter 1733： Dance on the tip of the knife

Slide 1733

"Let's get started!" I checked my watch and it was about 5 o'clock in the morning. If you look at the chart, the U1145 submarine is now 30 kilometers east of the Shetland Islands. This distance It's very good. Under the cover of darkness, the observation points on the Shetland Islands and the offshore patrol ships will not go so far. At the same time, at this distance, the new antenna equipped with U145 can clearly receive and locate radio communications on the Shetland Islands.

That's right, it's radio detection. It's all this age. Who still uses eyes to detect? With the development of radio technology on this plane in an unscientific way, the Germans' radio detection and location technology has also increased. The submarine was in a semi-submersible state, and the huge antenna began to unfold and was pointed in the direction of the Shetland Islands.

Invisible radio waves were transmitted in the air, and soon, the radio crew on U145 identified five huge signal transmitting stations. And mark them one by one on the chart. According to the channel analysis of the British Navy Fleet and the Naval Air Force, Dunnitz quickly identified the identity of the other party. Three of them were signal stations of the Royal Navy Air Force. These signal stations should be used by the airport. The other one is a signal station for the British Great Fleet, but it is different from the normal fleet. It is more like the contact frequency of the British seaplane force.

"So, what we can determine at present is that in the Shetland Islands, the UK has at least 3 airports used by normal aircraft and 1 seaplane airport?" Dunnitz asked with a frown.

"It should be like this. We and the previous batch of colleagues have been monitoring here for almost a week. The radio communication is very regular, and all of them are effective communication. From 5 o'clock every morning, these radio communication base stations will start working. The main task is to guide the aircraft at the airport. Most of these aircraft are twin-engine aircraft, mainly FB27 and O400. The main task should be reconnaissance and anti-submarine. Sometimes there may be big guys like V1500. The latter has more radio equipment. Perfect, it can be distinguished from the frequency and transmitter power." said Lieutenant Plitt, who was transferred from the headquarters of the High Seas Fleet in charge of radio work.

In fact, almost all the British bombers were shot down by the Germans. Therefore, the Germans are very clear about the radio communication equipment of British bombers. Different bombers use different levels of radio stations. The simplest only has the receiving function and receiving. These radios are generally used for dual-engine bombers. Unlike British Army bombers, maritime bombers must be equipped with radios when performing missions, because the more complex ones have transceiver functions. Relying on landmarks to navigate, what about maritime patrol aircraft? Especially the North Sea which is famous for bad weather... As for the radio level of the V1500 bomber, it has a higher level of power and a wider frequency band, and can even be used as an aviation base station to guide other aircraft.

According to the different communication methods of different transmitters, experienced radio personnel can know by distinguishing signals, such as how many British bombers are in the airspace and their approximate locations, and after a period of investigation , The data obtained by the German Navy is a bit scary!

"According to our previous and current intelligence estimates, the number of twin-engine bombers in this area is about 120, and the number of V1500 is about 30. In addition, in the vicinity of the Shetland Islands, we can still I saw some DH9 and dromedary camel planes. If you count the at least 40 seaplanes near the seaplane field, the total number of planes is at least 270. To be honest, I really did not expect the British to be able to come up with such a large number. Large-scale fleet." Lieutenant Plitt said.

"This does not include the British fleet in the Onyx Islands. If I guess right, the Royal Navy's twin-engine and above fleet should be here. The British aviation power in this area is simply terrifying!" Lieutenant Pritt was talking while drawing on the chart with a pencil. And mark the newly exposed radio transmitting stations one by one on the chart.

Not to say that the German High Seas Fleet can really number every British aircraft that appears here. In previous reconnaissance missions, other German submarines have also wandered in the British blockade area. They will record the British aircraft. Patrol range, route and density. Then use these data to estimate the size and affiliation of the British Air Force. Of course, this will also pay a price while obtaining a lot of information. Two submarines were sunk and injured during the reconnaissance operations within a week.

"If it is sunny, such a sea and air security net can be described as airtight. Fortunately, the situation in the North Sea and the sky in winter is changeable. Otherwise, our maritime transportation situation will only be worse." Lieutenant Te talked to himself while recording the situation, but at this moment, he saw Captain Dunnitz frowning and looking at a certain newly calibrated radio base station. Because this base station is too close to another base station calibrated an hour ago! In fact, if it is an airfield communication or guiding radio station, it is impossible to set up so close, it is completely unnecessary.

"Is it wrong?" Dunnitz asked, pointing to the map.

"Here I am also a little confused. From the frequency and password, it should belong to the Royal Navy Air Force. But as you said, the radio station here is set up very abnormally. We checked it. The radio frequency and transmission method are probably the same in 80%. But there is indeed a deviation in the position." The lieutenant said when he saw Dunnitz's point. This node casts all kinds of weirdness. If the technology is correct, can this radio communication node be mobile?

"Go, let's go and see!" Dunnitz said very decisively, why? Now that everyone uses radio positioning a lot, have you forgotten all the old naval methods of investigation? Since it is not possible to analyze the situation of the other party through radio, let’s go and take a look. Although it’s already dawn, the morning fog in the North Sea can still give submarines these small targets extraordinary cover conditions, according to radio lateral data. , It’s only about 35 kilometers away from the submarine. Can’t you just walk over and take a look? Why do you spend so much? !

Dunnitz and his colleagues quickly determined their position. At the same time, based on intelligence, they worked on the nautical chart to draw a curvy route. This route avoided areas frequently patrolled by the British and possible minefields. .

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(End of this chapter)