Preface

On this day, humanity consciously emitted the first electromagnetic wave into the universe.

Immediately begin calling the next one, their goal is to communicate with five hundred stations during the 48-hour competition.

We will meet again

There is a ghost calling out. Zhao Bowen also listened and asked, "Is it a 6-meter wave?"

The following year, Bai Zhen failed the college entrance examination and enlisted in the military, serving as a communications soldier at the Beihai Fleet Observation Station for twelve years. He was discharged and demobilized in 2012, and after demobilization, he has been driving for Didi in the urban area of Nanjing.

July 11, 1998

No wonder my English is worse than yours

Juliet Alfa One......again? Bai Zhen had no choice but to ask him to report it once more

The English spoken by Japanese people is truly a mess

· .

At the end of the long table, there is a cylindrical object placed horizontally, densely wrapped with layers of copper wire; this is an inductor coil

"Which channel is filled with ghostly cries?" Bai Zhen casually turned the frequency knob on the radio, somewhat surprised, "We are being suppressed across the entire frequency band by something."

"Where did the interference come from on the mountain?" Wang Ning placed the Jianlibao in his hand on the table, reached out to take the headset, and put it on his head, "Damn!"

The chaotic sounds of men and women mixed together, leaving Bai Zhen feeling perplexed. Who is rambling in the channel?

Meteor, look, it's a meteor!

The young person turned off the circuit switch

What on earth is a chestnut

Perhaps a powerful source of interference has indeed appeared nearby, which exhibits indiscriminate suppression across any channel, with noise overwhelming all effective signals

In a flash, a pale blue arc of electricity danced in the gap at the center of the copper rod

In mid-July, Nanjing is so hot that even dogs lack the energy to lift their spirits

The Icom 725 is unable to filter out all the noise; amidst the cacophony of background noise, Bai Zhen can hear faint human voices. He squints his eyes and concentrates his attention.

One step, two steps, three steps

They descended from the sky

There is a ghost named Sadako in the 6-meter wave.

You are looking at the screen of your mobile phone—whether it is an Apple, Huawei, Xiaomi, Samsung, or OV, they are fundamentally no different from the C-shaped copper ring held by Hertz in the past. All text, images, sounds, and videos are modulated into electromagnetic waves, transmitted through communication base stations and wireless routers, received by the mobile phone antenna, and then demodulated into signals that humans can understand, entering your eyes and ears. All text, images, sounds, and videos are modulated into electromagnetic waves, transmitted through communication base stations and wireless routers, received by the mobile phone antenna, and then demodulated into signals that humans can understand, entering your eyes and ears

Thank you! 73!

There is no way out. Wang Ning squatted back down to continue playing cards, "Lao Bai, don't worry about it, come on, let's play cards!"

Bai Zhen made an OK gesture and began recording the communication log

CQ ! CQ ! CQ ! Bai Zhenyi held the microphone in one hand and pinched a pen in the other, speaking in his English that had been soaked in pickled vegetables, setting up his stall in the channel, "Bravo Golf Four Mike Xray Hotel Contest ! BG4MXH ! QSL ? "

The antenna is a horizontally mounted dipole antenna oriented in the north-south direction, secured with guy ropes between two trees, resembling a clothesline from a distance

Now

In 1887, at 8 degrees 24 minutes East longitude and 49 degrees North latitude

QSL! Thank you!

He is very clear about the function of each component in this device. The coil is a step-up transformer, which can elevate the weak battery voltage to a sufficiently high level. The two copper spheres are capacitors, used to store charge, with one side being positive and the other negative. When the charge stored in the capacitors on both sides reaches a certain amount, the high-voltage current can instantaneously break through the gap in the air

Bai Zhen silently thought to himself, while replying: "Roger! Roger! You are 59! QSL?"

Before Bai Zhen could finish speaking, as soon as he released his hand, an extremely sharp noise erupted in the channel, piercing his eardrum like a needle

How do you verify your identity

Two hollow copper spheres are connected by wires to the inductive coil behind them

More than one hundred and thirty years have passed since humanity first captured electromagnetic waves in 1887. Theoretically speaking, according to the law of conservation of energy, the first electromagnetic wave actively emitted by humans is still oscillating in this universe. Although it has diminished to the point where no one can capture it, it wanders like a small ghost in this noisy world, perhaps causing a sudden jump of electrons in a component of your mobile phone's integrated circuit, flashing like a spark, so faint that no one else but this universe can notice it.

All characters in the text are pseudonyms

Let us mark another point in the historical coordinates of humanity

Juliet Alfa One Delta Charlie Kilo ! JA1DCK ! QSL ? '' Soon, a clear response came through the headset

12 meters

He raised the C-shaped copper ring in his hand—this copper ring had a small opening—and slowly approached the table, then held his breath

Let us finally punctuate a point in the long river of time

Bai Zhen wiped the sweat from his forehead and suddenly became invigorated, "Wait a moment... wait a moment! I can hear a sound!"

Come, let us mark a point in the coordinates of human history

Look up at the sky, it is right above your head

I am awesome

This is the sixty-ninth station they have communicated with, and everything is proceeding smoothly

There is a chestnut 12 meters away

At this moment

We must place this object in the designated position; otherwise, it will not be destroyed, as the power of nuclear weapons is also limited

What comes next

He removed the headset from Bai Zhen's head and said, "Stop it, stop it, let's go down the mountain to buy something to eat! Let's go buy old popsicles! Old—popsicle—oh yeah!"

Wang Ning and Zhao Bowen instinctively looked up at the sky, wondering if there were any aircraft passing by

This is not the purpose of the experiment

"Let's play cards!" said Zhao Bowen

Wang Ning squatted under the shade of a tree, weakly calling out, while lifting the hem of his white tank top to fan himself

Someone is speaking..." Bai Zhen slowly turned the knob, furrowing his brow, "The sound is very faint, I can't hear it clearly.

"What happened?" Wang Ning and Zhao Bowen, who were squatting on the side playing cards, turned their heads.

This year, he is thirty years old

The room is dimly lit, and there is a long wooden table placed on the floor

Bai Zhen ignored this fool, as he leaned over the table, diligently adjusting the radio. After struggling for more than ten minutes, there was still no effect. Even with Bai Zhen's extensive experience as a HAM, he had never encountered a situation like today—he even secretly wondered if Nanjing had been subjected to an EMP attack. Is there a war? Is the American Empire attacking?

This is a story about radio, which took place in 2019. Nearly two years have passed since then. During these two years, the author has devoted considerable effort to visiting various places and organizing materials from different sources, gaining some confidence to compile it into a manuscript for public release, striving to avoid major errors. If any parties involved see this humble work, I hope they will do so with a smile.

Transparent, faint electric sparks resembling fairies burst forth from the opening of the C-shaped copper ring

Old Bai, stop guarding... it's hopeless. Do you want an ice pop? Let's go buy some ice pops.

At that moment, you rubbed your sleepy eyes, unaware that across the long span of one hundred and thirty years, you received greetings from a young man named Hertz

In the midst of darkness, there exists a mysterious force that transmits energy from the electric spark generator on the table to the copper ring in his hand, without wires, without a medium, and without any connection. This small copper ring, isolated from everything, ignites with flames, truly a miracle

It seems there is some interference..." Bai Zhen pushed aside the headset on his head, "What's going on?"

A faint "pop" sound suddenly echoed, resembling a ghostly whisper; however, it did not originate from the experimental apparatus on the table, but rather from the copper ring in the young man's hand

With a loud clap, all sounds came to an abrupt halt. Bai Zhen raised his head, realizing that Zhao Bowen had turned off the radio switch

Here lies the lush northern gateway of the Black Forest, where the Rhine River quietly meanders by. It is an ancient and quaint small town, with scattered buildings nestled among the verdant trees, arranged in a harmonious manner.

The Nanjing Shortwave Group, composed of Bai Zhen, Wang Ning, and Zhao Bowen, participated in the IARU Shortwave World Championship. They used an Icom 725 shortwave radio, setting up the station and antenna on the Purple Mountain under the scorching sun, placing a small table on the grass beneath the shade of trees, and began calling out to the outside world starting from 8:00 AM that day

The other party's call sign is JA1...... 1... ...

The IARU HF Championship is the largest gathering of amateur radio enthusiasts in the world. Points are awarded based on the distance and number of stations contacted; the more stations contacted and the greater the distance, the higher the score. Contacting a station in Japan earns three points, while contacting a station in Europe or the Americas earns five points

On this quiet and peaceful afternoon, sunlight streams through the gaps in the curtains of a building at Karlsruhe University, falling upon the feet of a young person

CQ ! CQ......

The call sign starting with J belongs to a Japanese individual

A soft "pop" sound was heard

Encountering such an incident, the competition was considered a failure, yet Bai Zhen was unwilling to accept this. He lowered the volume and slowly turned the knob, scanning through various amateur channels.

Juliet Alfa One Delta Charlie Kilo ! JA1DCK !

· .

Not yet finished

Wang Ning, on the other hand, wandered for many years before finally entering the office of the Nanjing Municipal Commission, where he has served as the head of the radio monitoring station until today

With the addition of the open copper ring held by the young person, this set of equipment is complete

This object has a hollow copper sphere at each end, each the size of a human head. The two copper spheres are connected by a thin solid copper tube, approximately two meters long. At first glance, it resembles an elongated and slender barbell, but it is different from a barbell because the copper rod in the middle is centrally interrupted, with a two-centimeter gap dividing the object into two parts.

He widened his eyes in surprise; after relentless effort, he finally captured the ghost that floated in the air, invisible and intangible

73

In this year's World Championship, Bai Zhen and his two companions faced inexplicable interference, resulting in their failure.

Zhao Bowen was admitted to the Department of Physics at Nanjing University in the same year that Bai Zhen enlisted in the military. After graduating with a doctor's degree, he remained at the university to work and is currently an associate researcher at the Nanjing Zijinshan Observatory, engaged in research on space physics and electromagnetism to this day

This young man, who teaches at the University of Karlsruhe, is named Heinrich Rudolf Hertz

A barbell is horizontally placed in the center of the long table—at least it looks like a barbell

"What is that sound?" Wang Ning and Zhao Bowen were squatting far away under the tree, no longer playing cards, panting with their tongues out, feeling as hot as dogs

The small German city of Karlsruhe

Save me, please, save me

Every minute and every second of this world, long waves traverse the deep ocean, short waves oscillate in the ionosphere, and UV waves rampage through the city. In places invisible to the naked eye, they form another world

CQ......

Maxwell's theory has been perfectly validated

The inductor coil is connected to the battery located under the table using wires