The next day, Xing Baohua went to Liu Haibo's place and brought back the video recorder and some cassette tapes.
They'll bring it directly to the factory, and anyone who wants to watch a movie in the evening can watch it there.
Niu Jishan also brought a television set from the repair shop, whose owner he didn't know, and put it in the factory to watch.
Anyway, when someone comes to ask for it back, we just take it back to them.
As it turned out, Niu Jishan couldn't see it anymore. Xing Baohua gave him the drawing he had made yesterday and told him to make it as soon as possible while he went to get the microcontroller chip.
We need to take this to the provincial capital, and time is tight.
Splitting up is definitely faster.
Three days later, Xing Baohua returned to the provincial capital.
I went to the studio for a look, and then headed to the performing arts troupe.
Upon meeting Li Wengang, he handed over the wireless transmission system he had developed to Li Wengang and showed him how to use it.
Li Wengang immediately pulled Xing Baohua aside to conduct an experiment on the spot.
As soon as the order was given, the soldiers began to move the equipment.
Straightening the power cord, moving boxes, and so on.
Everything was in place. Xing Baohua connected the transmitter to the recorder. The transmitter also needed a power supply, so Xing Baohua provided a 12V transformer.
The receiver is connected to the speaker and also comes with a power supply.
I tried listening from 100 meters away, but there was no sound.
At this point, Xing Baohua said that wireless bridging was not enabled.
They also sent someone about fifty meters away with a bridging box made by Xing Baohua. It was pre-calibrated for the frequency and automatically connected when the power was plugged in.
Finally, some sound came out of the speakers.
The volume can also be adjusted.
Li Wengang then brought over a mixing console, connected it to a tape recorder, and then connected the transmitter to the mixing console.
He called over someone who knew how to tune the sound system to operate the mixing console, and Li Wengang ran over to the speakers to test the sound.
Xing Baohua pursed his lips, thinking to himself, "Isn't it enough to just make a sound? Why are you asking about sound quality? If you want to play around, let's go all out. You have the people, I have the equipment, so it's a free test anyway. I'll even make money if the test is good."
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Shout loudly and call Li Wengang back.
"Xiao Xing! This thing is amazing, there's no interference noise at all," Li Wengang said excitedly as he ran back to Xing Baohua.
Xing Baohua thought to himself, "That's right! This is a digital machine! There are still interference frequencies, we just haven't encountered them yet."
Then he said to Li Wengang, "If an airplane comes down from the sky, it will create interference waves. Other equipment will also be affected. You'll see as time goes on."
“That’s good enough, I mean Sasha’s kind,” Li Wengang said.
"Still buzzing? It'll happen," Xing Baohua said helplessly.
"Why did you call me back?" Li Wengang asked.
"I'll also take a look at the wireless microphone equipment. Go find someone who can sing and give it a try," Xing Baohua said.
"What are you looking for? Just grab any one of them and they can sing," Li Wengang said, pointing to the soldiers who had finished their work. He even waved to one of them.
Well, this is truly a professional place; even the soldiers who do the work sing like professionals.
Xing Baohua's device is slightly larger because batteries at that time had limited capacity. The wireless transmission box is large because it uses four size D batteries.
Wireless microphones actually come with wires. One wire connects to the microphone, and the other is an antenna.
The transmitter box can be worn on the waist, and the short microphone cable is connected to the transmitter. The cable runs from under the armpit to the front.
Actually, an ear-hook microphone would be best, but the conditions don't allow it, do they?
Let's just use it like this for now, and improve it when we get back to central Shandong.
The soldier first sang one song a cappella, then sang another one with the accompaniment.
The effect is good; the loudspeaker in the distance amplifies the sound, and it can be heard from 100 meters away.
Li Wengang clapped his hands happily and said, "How many channels can this equipment support?"
"It depends on how many channels your control panel has. It supports as many channels as it has. Let me tell you, this thing is coming to you as soon as it's made. We haven't tested the power yet, so we don't know how long it will last. It would be embarrassing if it ran out of power while playing music," Xing Baohua reminded him.
"Got it! You only made one?" Li Wengang said, pointing to the wireless microphone.
“Isn’t it just one experiment? What if we do too many and they fail? Wouldn’t that be a waste?” Xing Baohua said.
"Can you make me three more?"
"I just came from central Shandong and haven't even had a chance to catch my breath before running here. You won't even give me a drink of water, and you're telling me to go back and make you three," Xing Baohua complained.
"Haha! Sorry, see what materials you're missing? I'll prepare them for you here, and you can have them made at the repair shop in the family compound," Li Wengang said with a smile.
“No, I don’t have a computer or a programmer. How am I supposed to do it?” Xing Baohua said.
“I have a computer, but what is a code writer? I’ll ask about it later. If we have one, can we do it?” Li Wengang said.
"More or less," Xing Baohua said evasively, though he really wanted to slip away.
Why does Li Wengang insist on appearing on TVB?
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