Xing Baohua was extremely worried.

What should I do? They've done you a huge favor, so you should at least give them something in return!

Xing Baohua can only think of two solutions right now: one is a Wi-Fi-based method that requires high-power bridging. Audio/video transmission and video transmission are not the same thing.

Increasing the bandwidth is necessary to ensure stable signal output.

Other technical means were beyond his academic scope, and he was not omnipotent; moreover, he only knew two transmission methods.

Mid-frequency band! High-frequency band! Only those who are into professional wireless technology understand these things.

These are things that counterfeit phones use!

However, we could try the microwave band, which is a more advanced technology. Xing Baohua would need to look up information, and besides, there weren't many references available for him in this era.

We could only figure it out by trial and error. As for communication satellites, I wonder what their bandwidth was at that time. Just kidding, if we turned the power up too high and burned it out, there would be no way to get it down and fix it.

Regardless of the technology, both transmitters and receivers are needed, and these devices are not small and may be quite heavy.

If there were cell towers with base stations everywhere, that would be much easier.

Unfortunately, no! We can only bridge points directly.

Forget it, there's no point in overthinking it; it's not something I can handle. I'll come up with a plan and have them experiment with it. We'll see if it succeeds later.

Xing Baohua returned to his office without paying any attention to the two teachers.

He first wrote a plan, and then refined it according to the plan's sequence.

This also involves many IC chips, channel coding, digital processors, modems, and digital module interfaces.

These things all require coding first, then driver development, and then debugging one by one.

He didn't have time to debug it for them! He could only write the chip's code and put it into the chip.

Without further ado, he turned on the computer he had assembled, took out a few blank floppy disks, and began compiling the code.

Teacher Cheng and Teacher Ren stood behind him without saying a word or disturbing him, just watching him type on the keyboard. Teacher Cheng even took a look at the plan he had written.

After an afternoon, as darkness fell, Xing Baohua finally came up with a small chip program.

Fortunately, I still have some documents I read in my previous life in my mind. They are all wireless information related to mobile phones, and I can use some of them for now.

How wonderful it would be if there were base stations everywhere!

It can be directly connected by using the baseband chip's decoding.

There is a signal tower every 1-5 kilometers, and each signal tower is equivalent to a large bridge.

Transmission distances of 1000 kilometers are no problem.

Currently, no one can afford to transmit images over a distance of 1,000 kilometers except for small, winged creatures in space.

When it was time for dinner, Xing Baohua had no choice but to continue entertaining the guests.

Although the town is close by, it doesn't have as many food options as the city. As for accommodation, should I arrange it myself?

Fortunately, Teacher Cheng said they had a place to stay and didn't need him to worry about food. Teacher Cheng called and said a car would come to pick them up later.

Xing Baohua was relieved. One or two days of entertaining was fine, but he couldn't handle it long-term! His small business couldn't afford the expenses alone.

I remember in the late 1970s, there was a factory that had some advanced technology, and as a result, competitors from all over the country came to learn from and inspect it.

Apart from subsidies from higher authorities, the factory bears all other hospitality expenses itself.

Who can stand this?! Production hasn't even started yet, and there's already no funding. Even the production funds allocated by higher authorities are being used for food and drink; how are we supposed to complete the production tasks?

Even a small village enterprise like Xing Baohua wouldn't dare to host large-scale events!

Those who want to visit must be customers!

It's one thing for others and colleagues to watch, but not only do they have to be provided with food and lodging, but they also have to take the products they produce back to produce more, essentially taking away their own jobs? This might have been acceptable a few years ago, but now, only someone out of their mind would do something like this.

After the two teachers left, Xing Baohua quickly made do with whatever was available and then immediately started writing code for them that very night.

Being a programmer is definitely not Xing Baohua's forte, but he can only grit his teeth and persevere.

It may be tiring, but I'm willing to do it for the sake of national defense.

I didn't even realize that a simple audio technology had been turned into such a complex video technology.

However, when designing frequency bands, it is necessary to move beyond fixed frequency bands.

Otherwise, if someone adds a jammer, this thing will be useless.

Since it's point-to-point and not recyclable, let the experts handle the frequency band selection.

Professional wireless experts are far superior to this knock-off. He only needs to handle the hardware chip.

I barely slept all night, but I managed to get the code for two chips.

It needs to be saved on a floppy disk, and the program name needs to be labeled on the floppy disk.

It's best to print out a copy of this or make multiple backups; floppy disks aren't very reliable.

If it's dropped or folded, it's easy to lose the reading.

Around eight o'clock, Xiao Bo came to work and brought Xing Baohua steamed buns and fried dough sticks.

Feeling very hungry, Xing Baohua finished the whole meal in one go, and he himself felt that his appetite had increased recently.

The two teachers arrived shortly afterward; the car that brought them was parked at the factory. As if on standby at any moment, the driver didn't get out.

"Teacher Cheng, Teacher Ren, I'm busy here. Do you two have nothing else to do? Why don't you take a stroll around?"

"Judging from your complexion, you didn't sleep all night!" Teacher Cheng said.

“Yes! We haven’t finished these two programs yet. We still have to continue.” Xing Baohua said, picking up two floppy disks to show them.

As a result, Teacher Ren walked up to her, took the money, and turned to leave.

Xing Baohua thought to himself, "What's going on?"

A short while later, the driver who brought them started carrying computers into the office.

Xiao Bo's desk was occupied.

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