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The standard name for radios used by small and medium-sized ships is ultra-shortwave FM radiotelephones.
It is an older technology but very practical.
But this communication technology has a very big disadvantage, that is, the communication distance is limited.
At this time, relay stations are needed to expand signal coverage.
But the relay station may malfunction or be damaged. Even if there are no unexpected situations, it still needs to be shut down regularly for maintenance.
In order to ensure the continuity and smoothness of communication, a backup relay station is needed to temporarily assume the relay task.
Therefore, the backup relay station is shut down or semi-working for most of the year.
If the enemy intends to destroy our communication system, it would have no practical significance to attack Xiaozhang Island alone.
In addition, with the development of communication technology, in addition to radio equipment, ships are now equipped with digital communication technology, such as maritime satellite phones.
If an emergency does occur, you can still communicate with the land, but the cost will be higher.
And Liu Yi suddenly wondered if the other party was targeting Xiao Zhangdao because of this "spare".
Because if there is a problem in this kind of place, no one will notice it for at least a few hours.
Thinking this way, the five treasure island agents visited the island once, stayed for a few hours, and then left.
Why is this?
There are only three warriors on the island. If they want to control it and take action, it can be said that there is basically no difficulty.
But they didn¡¯t do that, and they didn¡¯t leave any hidden tricks behind.
¡° Moreover, the task they received should be to arrive at the designated location at the designated time.
From the fact that we checked the time many times while sailing and tried our best to slow down the repair progress, we can draw another conclusion.
Baodao should order them to stay on Xiaozhang Island for a certain period of time.
They don¡¯t need to do anything special on the island, but they have to stay for several hours
"What the hell, those five grandsonsshould be here to attract our attention." Liu Yi suddenly said something.
Gao Mei was stunned for a moment when he heard the words, and then realized what Liu Yi was talking about.
Xiaozhang Island is a medium-sized island. The side near the sea is narrow and the altitude is low. The hydrological and meteorological station is placed there.
The end near the inland sea is wider and has a hilltop with an altitude of more than 20 meters.
The antenna is at the highest point, the relay station and camp area are at half height, and the small dock is in the middle of the island on the side relatively close to the sea.
Normally, one of the three soldiers is responsible for guarding the sentry, one is responsible for guarding the machine room, and the other is resting.
Because the radiation within the range of the highest antenna component is relatively high, the sentinel¡¯s position is at the second highest point of the island, on the roof of the second-story building of the relay station.
The monitoring range is mainly in the direction of the outer sea and close to the inland sea. Because it is blocked by the highest point where the antenna is placed, it is a blind area of ??sight.
In addition, the person who is resting must patrol around the island from time to time.
The five men from the other side came out and started a fight, which not only attracted the attention of the sentry, but also mobilized the other two soldiers on the island.
In other words, during the period when the other party was stranded, except for the small pier, the island was completely undefended in other directions.
After having a common guess, with the tacit understanding between the two of them, there was no need to discuss countermeasures.
Gao Mei assigned the task to Liu Yi without hesitation: "You have good eyesight, go to the sentry position."
¡°I have good hearing, so I will go out on patrol.¡± Liu Yi unexpectedly refused the task.
"Execute the order!" Gao Mei emphasized his tone.
"There is no danger." Liu Yi knew that Gao Mei was worried about him.
He lowered his voice and explained: "If they planned to use force, they wouldn't send people from Baodao to attract attention.
I just walked around to check the situation. If I really encountered them, they would have to avoid me. "
Gao Mei thought about it carefully and realized that this was indeed the case, so she stopped insisting.
"Whatwhat's going on?" The squad leader looked at the two people, completely unable to understand what they were talking about.
"We suspect that someone has sneaked onto the island. Find us two sets of military uniforms and a gun magazine." When Gao Mei answered him, he took out the satellite phone from his arms.
Xiaozhang Island is located close to the inland sea and has low strategic importance.
So, although there are three soldiers stationed on the island, the people outside are??Stampede.
Although the lodging in sight cannot be directly judged as footprints, it is definitely abnormal.
In the current situation, even if there is suspicion, Liu Yi cannot stop to check. I can only silently note the location and continue walking along the path.
The area in front is relatively flat, and there are more than a dozen monitoring instruments painted with white paint on the open space.
? Among them, the thermometer and hygrometer are protected by small boxes and cannot be seen directly, but the wind power and wind direction measurement equipment are exposed to the outside.
Liu Yi glanced at it and saw that the wind was blowing from the southwest and the wind force was about level 4.
this point is very important.
Once you need to take action later, especially when you use the Bayi Bar to attack potential enemies from a long distance without a sniper scope. With this thing as a reference, it is definitely more accurate than physical sense and experience.
Liu Yi didn¡¯t find anything new in this area, so he continued walking along the path around the island calmly.
After a while, we passed the area where the monitoring equipment was installed, and continued forward to reach the narrowest point of the island corresponding to the open sea.
The reefs here are densely covered, making it difficult not to mention that there is a vertical height of more than three meters from the sea. Even if you climb up, there will be no cover when you reach the high point of the bare rock.
As long as the visitor is a little more professional, he will definitely not log in from here.
So, when reaching this section, Liu Yi acted like he was cold and walked quickly with his clothes tight.
¡°Then, we passed by the equipment building of the hydrological station.
A lot of equipment at the water level station is placed below the sea surface, so the equipment building is very close to the coast.
In the middle section, there is a cement road and gentle steps leading directly to the seaside.
Such a place is definitely an ideal landing point if you don¡¯t consider the tendency to leave traces of travel.
Liu Yi walked around and carefully observed the cement pavement and found no footprints or watermarks.
From this point of view, even if the other party chooses to land from here, they will not come up by diving or wading.
Then, there must be a ship.
So he wandered to the beach, faced the sea, carried a gun and flashlight, and unbuttoned his trousers.
When I glanced at both sides of the coast while I was in the water, I suddenly felt a numb and itchy sensation of static electricity on the back of my neck. (Remember the website address: www.hlnovel.com