Anyone who's into wireless devices knows how to modify a radio into a walkie-talkie.

But nobody is willing to modify this thing. Everyone knows the principle: the power of battery power is not very high, and the transmission distance is also limited. In open areas, it is only fifty or sixty meters, and in areas with obstacles, it is limited to within ten meters.

It's like making a child's toy. Taking something as expensive as a radio and modifying it into a walkie-talkie is something most people can't do. It's too wasteful, and you'd need two of them, and the distance they would even reach with your voice wouldn't be as far.

If you want a longer range, you can increase the voltage and power, but the maximum distance is only about 200 meters. This distance can only be achieved in open areas. Any further, the equipment would need to be much larger.

Xu Dong smiled and said he would change it, and he really would. Initially, they thought it was for the children to play with.

Xing Baohua touched his nose and said to Li Wengang, "Master Xu said he would make changes, why don't we ask him to make some changes? I'll pay for it."

Xing Baohua didn't have time to compete with these people over what kind of modifications they were making. Wouldn't it be better to spend that time studying some sheet music?

Since they said they could modify it, then let's do it. Li Wengang is reluctant to spend money, but I'll cover this small amount. Anyway, helping Li Wengang is a way of repaying a favor.

"No need, it's free. Just watch and see." Xu Dong said, picking up a screwdriver to disassemble it.

Li Wengang quickly stopped him, explaining that he needed audio transmission, not a walkie-talkie! He hurriedly said, "Master Xu, you've misunderstood, you've misunderstood."

"What misunderstanding? It's just a walkie-talkie. Give me a little over an hour and I'll fix it for you," Xu Dong said.

"No, I might not have explained it clearly. It's not a walkie-talkie, it's wireless audio transmission," Li Wengang quickly explained.

I was just wondering what would happen if Xing Baohua was outmaneuvered, but it seems that Xing Baohua has to make the move!

"What is that thing? Audio? The sound from a walkie-talkie is also audio! It's the same principle, right?" Xu Dong said.

Li Wengang didn't know how to explain it to this persistent and kind-hearted master.

Xing Baohua said with a smile, "That's right, Master Xu. What Teacher Li wants is wireless transmission from the power amplifier to the speaker."

What kind of speaker?

"It's a loudspeaker! The technical name is a loudspeaker." As Xing Baohua explained, he thought to himself, "Are these people all self-taught? How come they don't even know what a loudspeaker is?"

Xu Dong nodded and listened silently as Xing Baohua continued.

"Although the structure is the same as a walkie-talkie, it needs to be fixed to one or two frequency bands, and it also needs to have mute and noise reduction." Xing Baohua paused slightly at this point.

Pointing to the radio, he said, "Current radios don't have noise reduction, so we need to add noise reduction. Also, to maintain frequency stability, we need to add an oscillation capacitor."

Seeing that they didn't speak, Xing Baohua continued, "The modified thing has a higher power output, and the battery can't be used. A transformer needs to be added to change the original voltage. So the modifications are quite significant."

He then said to Li Wengang, "Find me some white paper and a pen. When I take apart the radio later, I need to draw diagrams. Mark where improvements are needed so we can build it from there. But there's one thing I must emphasize: this thing is prone to frequency crosstalk."

"Why not just change the frequency band?" Xu Dong said.

"Master Xu, it also depends on whether the radio can reach this frequency band! We also need to modify the power amplifier and stuff. I'll start working on it, you can just watch from the side. If I need any parts, you can get them for me. If there's nothing else, please wrap some extra enameled wire around the oscillator coil I took off."

Xing Baohua didn't have time to explain it to this person either, since they weren't his students. Even his own students hadn't been taught in such detail.

Work is the priority; I need to go back and find Grandpa Li to continue working on the score.

Perhaps sensing that Xing Baohua was in a hurry, Xu Dong asked several other employees to help disassemble the outer casing.

When Xing Baohua arrived, he asked Li Wengang about the approximate transmission distance required.

Li Wengang told him that it should be around 200 meters, and it must be stable and without any noise.

Simulating a distance of 200 meters is quite challenging; the only solution is to increase the transmission and reception power.

Two small radios were just enough to meet the standard, and the antenna of the other one was just extended.

Add a 6.5mm jack on both sides; speaker connectors are now all large-sized.

Includes a microphone.

It wasn't until evening that they managed to convert the two radios into one set.

The remaining set was modified by Master Xu based on Xing Baohua's drawings. Since he was overseeing the entire production process, there shouldn't be any major problems.

Xing Baohua's only concern now is crosstalk and channel interference.

If someone uses a wireless frequency band, or tunes into their frequency band, the sound coming from the loudspeaker will be quite loud.

That evening, Li Wengang treated Xing Baohua to dinner as a way of thanking him. They ate a simple meal, nothing like the lavish meat that Xing Baohua had.

He didn't drink any alcohol; Li Wengang said he would pick him up tomorrow to test him.

Xing Baohua initially wanted to refuse, but then she heard that Lü Mingda was going to take her to see the equipment and the venue to be selected.

Xing Baohua thought to himself, "Isn't this something the director would do?"

But he still nodded in agreement. After all, it was his own property, and he had to see it!

He's in a somewhat awkward situation right now. While he's the main creator, he's the one who built it up from scratch. But as for what he can actually do, he's all talk.

If we don't keep a close eye on it, the film will be shot awfully, and we'll have nowhere to cry about it. Anyway, it's not his money, so crying won't help.

Back at the guesthouse, Grandpa Li left Xing Baohua a note. It said that the person had been found and could go to central Shandong, but Xing Baohua needed to provide the equipment.

Where is Xing Baohua going to get all this stuff? It's another headache.

I want to calm my mind, and I really want to be quiet.

Yang Jing should be able to get her hands on electric guitars and other metal instruments.

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