Chapter 1313 “Information Age”

Graycastle, Neverwinter City.

The report on the war on Grand Duke Island and the situation in Wolf Heart was sent to Roland two days later.

Compared with the previous week, it took a week to send a letter from Eternal Night City in the north to Neverwinter. This speed of transmission cannot but be said to be a huge improvement. Whether it is short-distance delivery by flying couriers or long-distance travel by steamships day and night, they have now been integrated into part of the messaging system. Every important message will be equipped with a dedicated ship or even an airplane - and This time the report was sent by Tilly.

"Thank you for your hard work." Roland offered the Chaos drink in greeting, "Is the situation over there okay?"

"Don't you know just by reading the report?" Tilly took the cup and glanced at him, "You are so attentive, what are you feeling guilty about? Is it because I don't have a clue about my special machine?"

"Pfft..." Nightingale's suppressed laughter came from behind.

"How come, I have selected the most suitable one from several plans. As long as Anna takes time, we can start trial production immediately." Roland said quickly, "As you know, several projects have arrived recently. She is really too busy for the most critical step."

"For Anna's sake, I won't argue with you this time, brother." Tilly drank the drink in one gulp, wiped her mouth and walked out of the office, "The Seagull will return soon, I'll go back first Sky Knight Academy."

"You won't stay for a day?" He asked slightly surprised.

"There is no way. The only ones that can threaten the Lord of the Sky are the Seagull and Andrea on the front line. And... I don't want to miss any opportunity for revenge." Tilly waved her hand with her back to him, "Then I'm leaving. elder brother."

Looking at the door that was closed again, Nightingale sighed softly, "Everyone... is working hard."

If possible, I would prefer them to work on other aspects instead of war. Roland had such a thought in his heart, but did not say it out loud - because no one can rest on this burden until the War of Divine Will is over and the fate of mankind is decided. Saying this now means nothing except evading responsibility.

After a moment of silence, he broke the seal of the report.

After reading all the reports, Roland finally understood the meaning of Tilly's words. Being able to issue a retreat order in time and successfully ambush a devil king who came and went without a trace on the vast sea, Edith Kant and Andrea were undoubtedly the biggest contributors to this battle. But equally, the sender of the key information cannot be ignored - without this person's desperate move, there would be no victory.

"What are you going to do?" This matter obviously attracted Nightingale's attention.

"No matter what his original intention was in sending this secret letter, this person's name and achievements should not be forgotten." Roland said solemnly. If it were the past life, it would be almost impossible to find an unidentified informant after the long war. I am afraid that the only thing left on the tombstone is something like "No one knows your name, and your achievements will last forever." 's inscription. However, the witch can change this unavoidable situation, so that every warrior who contributes to the destiny of mankind can leave his name in the long history of history. "When the Everwinter Kingdom returns to the control of the First Army, let "Black Money" cooperate with A-Xia to confirm his identity and origin. "

If his murderer was still alive at that time, he would certainly not be able to escape the severe punishment of the law.

Nightingale nodded, "It would be great if the device you mentioned that can communicate across thousands of miles could be manufactured earlier."

"Unfortunately, that's not my specialty." Roland couldn't help but rub his forehead. Thinking of the circuit diagram that he had memorized forcibly, he felt a headache.

"Now you can finally understand how I felt during the exam." Nightingale covered her mouth and said.

"But no matter how difficult it is, I won't lie down on the table and fall asleep like someone, only to hand in a blank paper in the end." Roland glared at her, "In fact, I have almost completed the production of the prototype. "

Yes, although progress was extremely slow, the radio project never stopped.

Like the piston engine, after considering many plans from the Graycastle Design Bureau, he decided to select two of them and proceed at the same time.

These two are the spark transmitter and the AM transmitter.

The former is the originator of radio waves. It has an extremely simple structure and does not have any electronic components. It only uses a transformer coil to increase the voltage to charge the capacitor until the voltage loaded on the capacitor between the spark gaps is high enough to penetrate the air and discharge electricity. spark. This part is quite like a lighter, except that the current passed by the spark is not wasted, but repeatedly oscillates between the capacitor and the inductor, causing it to generate electromagnetic waves, and finally emits these electromagnetic waves through the antenna.

In other words, as long as the power is turned on and off, intermittent electromagnetic bursts can be emitted. The listener can translate it into a corresponding signal based on the length of the chirping sound. The so-called long and short telegraph codes come from this.

Although it still sounds a bit confusing, Roland adopted the most ingenious method, which was to first let the radio project team of Graycastle Design Bureau use readily available materials to build a usable physical device, and then copy the real thing.

For example, sandwich two pieces of tin foil up and down on a stack of oil paper, and then seal them with wax, which is a simple high-voltage capacitor.

The inductor is even simpler. It is nothing more than wires wrapped around an insulating tube.

Roland can complete these devices by himself without considering mass production or specifications. Although they appear bulky and crude compared with those industrial products that are only the size of a fingernail after encapsulation, the effect is basically the same. Once the transmission tower was built, he could attempt the first wireless transmission experiment of this era.

However, the shortcomings of the spark transmitter are also obvious.

Even if it passes the test, if it is to be put into official use, it will have to design a code that matches the Kingdom script, and the training of the sender and receiver will also take a lot of time. In addition, the spectrum of spark transmitters is extremely wide, and only one transmitter can work within the same range, which is not suitable for use by frontline intelligence personnel.

Therefore, his ultimate goal was still an AM transmitter that used tubes to amplify the signal.

The biggest advantage of the latter is that it can directly transmit voice signals.

In principle, radio communications and telephones are very similar in nature. They both convert sound oscillations into changes in current or electromagnetic waves, which are then transmitted over long distances to the other end and then converted back into sounds. It’s just that the frequency of human voice is too low, which makes the wavelength of the signal wave too long. The longer the wavelength, the larger the size of the antenna required. If the voice signal is directly transmitted, the length of the antenna may be more than 100 kilometers. This is very difficult in engineering. It is an impossible thing to achieve.

Therefore, if you want to transmit voice, you must ride on a higher frequency carrier.

This is what is called modulation.

After the new waveform mixed with the two is accepted, the listener must also filter out the high-frequency waves through a series of demodulation methods, leaving only meaningful low-frequency waves before they can be converted into final speech.

Once the AM transmitter is successful, both the First Army and the intelligence agencies will have the ability to communicate in real time.

For war, its significance is self-evident.

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