In fact, at this stage, Sun Jie is definitely better than Huadong in terms of on-site investigation. After all, this is one of the duties of a forensic doctor, and the forensic doctor itself belongs to the on-site investigation department. It's just that Huadong took the initiative to volunteer, so Sun Jie didn't say anything.
The four of them followed the footprints and went up the mountain little by little.
In some sections of the road, the footprints had been processed, but the processing level was very poor. Four people were on guard in front and behind, and they arrived at the destination after more than ten minutes.
"The road here has been pavement-paved." Bai Song said in a heavy tone, "These scammers have big plans. The road here is now wide enough for professional off-road vehicles to pass through."
"You mean, this road leads directly to the fraudster's lair?" Sun Jie was a little confused. "How can a car run on this road?"
"Yes," Bai Song said, "My friend Zhang Wei has been telling me about cars a few days ago. He told me that some heavily modified off-road vehicles can easily pass through shell holes and stone roads. This road surface has been treated. If it is not for traffic, there is no need to cut down these trees."
"Yeah, that makes sense," Sun Jie nodded. "If we want to start the arrest, we have to find a way to close this road."
"Well, we'll talk about it later." Bai Song raised the steel bar in his hand: "You can't stop the off-road vehicle with this."
"Well, let's take a look at what these three people did first." Sun Jie found a battery under a tree.
"Lithium battery." Sun Jie weighed it and found it was only about 6-7 kilograms. "This thing is not cheap. This battery can store one or two kilowatt-hours of electricity."
Many people do not understand the concept of power. They only know the milliampere-hour of a mobile phone, but do not know what this milliampere-hour means.
Let's use the electricity at home to calculate. A large mobile phone battery with a voltage of 3.7 volts and 5000 mAh can theoretically release energy of 3.7 volts times 5 amperes times 3600 seconds, which is expressed in household electricity "degrees", which is 0.0185 degrees.
In other words, without considering energy loss, one kilowatt-hour of electricity can fully charge more than twenty batteries of this type, and can fully charge about 10 power banks.
One or two kilowatt-hours of electricity is the amount of power stored in a car battery, enough for a hotpot meal.
There was a wire connected to the battery that went all the way to the tree.
"Who's going to go up and take a look?" Wang Liang pointed to a tree about five or six meters high.
"Someone claims to be an expert in electronic equipment..." Wang Huadong looked puzzled: "Huh? Who said that?"
"Ahem," Wang Liang touched his chin. "Based on my professional knowledge, electronic equipment, no matter what, just cut the wires and it will be solved once and for all..."
After saying that, Wang Liang raised the pliers in his hand and wondered to himself how smart he was!
"..." Bai Song's face was dark: "If you say to cut it, do you need to tell me? How can they not know that you cut it? Besides, you dare to cut it without knowing anything? What about the bomb? Otherwise, you cut it and we stay away."
Wang Liang looked at several people eagerly, but no one paid any attention to him.
Let’s climb…
Wang Liang is only about 1.78 meters tall and is not very good at climbing trees, but he is more flexible than Bai Song. With the help of the three people, Wang Liang climbed up.
When he reached the middle of the tree, Wang Liang saw a machine. He clamped the tree with his legs, looked at it carefully, and fiddled with it for more than ten minutes before slowly climbing down.
After coming down, Wang Liang's legs were shaking so much that he couldn't even stand steadily and sat down on the ground.
"What is it? You've been looking at it for so long." Wang Huadong asked.
"Remote-controlled full-band jammer." Wang Liang took a breath and spoke word by word. Then he slowly stood up and took out his mobile phone to observe the battery.
"You know this?" Bai Song couldn't help but be a little surprised: "Of course! But what is this thing for? Why did it take so long to come down?"
"I looked up a few words on the Internet on my phone..." Wang Liang scratched his face: "Hey, there are so many words I haven't learned yet..."
"Okay..." Bai Song nodded: "What is this thing used for?"
"Interference signal." Wang Liang pointed to the battery and said, "This battery has been modified in series. It was originally a 12-volt battery, but now it has been modified into a 200-volt DC battery. The wires are also copper wires used for household AC power.
The device has a power of 3,000 watts and is currently turned off. Once it is turned on using the remote control, it will be able to achieve wide-area, full-band interference within half an hour.”
"To interfere with cell phone signals?" Sun Jie looked at the barren hills around him. "Why install it here? There's no signal around here. Did you see it wrong?"
“Yeah, yeah,” Wang Huadong complained, “Maybe this is a signal gain amplifier. The scammers probably think the cell phone signal here is not good.”
"You guys come to install this thing at three or four in the middle of the night? And you're so careful?" Wang Liang was a little speechless: "You're a policeman like this?"
Wang Huadong didn't bother to pay attention to Wang Liang and walked under the tree. "No matter what this is, we can't let it be used, and we can't let these people know that we have tampered with it. Is there any good way?"
"This?" Wang Liang frowned. "It's definitely useless to install a wireless switch. Once this device is turned on, there is no difference. I installed a wireless device, but there was no signal as soon as this machine was turned on."
"This is simple." Bai Song took the phone and carefully photographed the power cord. "This circuit looks complicated, but it actually consists of three parts. The first part is the structure between the battery and the machine in series. The second part is the current signal structure, which is used to test whether the entire system is faulty. The third part is the remote control switch structure, which is actually connected to the second part. Both use the original 12V battery voltage. Now it's actually very simple. The second and third systems are always on, and the power consumption is very low. The first system is off. The two main conductors are now out of power. Peel off the outer shells of the two wires and make them touch. Once the power is on, they will short-circuit immediately."
"Okay, that makes sense. In this way, once it is started, it will burn automatically." Zhang Jie looked around: "Will it cause a forest fire?"
"You've considered it too comprehensively..." Bai Song thought for a moment, "But no, give me the pliers, I'll adjust the direction of the wires, so that if there's a short circuit, the copper wires that are in contact will automatically melt and cut off the power, and there won't be any fire hazards."
"Is this the only device of this kind here?" Wang Huadong asked.
"I don't know about the ones far away, but this should be the only one nearby. Don't underestimate its coverage." Wang Liang thought for a moment and said, "Generally, the transmission power of TV towers across urban areas is only a few dozen kilowatts, but this jammer has 3 kilowatts. Just make an analogy."
"Well, it's getting late, let's go back early," Bai Song pointed ahead, "about one kilometer ahead is the scene of the murder tonight, let's go back the same way."
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