Chapter 51 Interference Signal

Lin Hongtong is very efficient. Due to the processing of his own "signal filter", most of the signals he received are "59", indicating that the signal is very good. Not only is the strength is good, but the noise is also very low. Even if it is not "59", it is at least above "57".

Once he and other hams are basically connected, the probability of missing and repeating listening is very small. Unless the other party hesitates to make mistakes and sends the wrong signal, it is basically once, and he completely "copys it" and then "73".

However, Lin Hong still feels that this efficiency is really a little low. He had expected this situation for a long time. Most of the hams in China do not play radio for a long time, and the basic skills are relatively weak. In particular, many of the Morse codes are not familiar with it. The signals sent often need to be corrected, which leads to more time in the process of Unicom.

From the call sign, it can be seen that most of the hams connected by Lin Hongtong have a four-level certificate, and a small number of them have a three-level certificate. He has not found one with a second-level certificate yet.

In addition, with the passage of time, Lin Hong found that more and more "interference" signals began to enter the channel. It was some unknown hams who found that the signal suddenly surged during this period, and many people had been making "stables" calls, so they felt very felt very, responded one after another, and established with the contest Contact and inquire about the relevant content.

These people have basically never heard of the ham of the CQWW_DX competition, and most of them are beginners. The efficiency of not connecting is unbearable, and they don't have any basic common sense, and they have to spend a lot of words to explain. I still can't understand what you're talking about for a long time. .

If this is okay at ordinary times, everyone has time. With the spirit of "friendship" ham, everyone will basically be enthusiastic to explain with them. But now is the time of the game, and every second is very precious. It can only be disconnected and find other targets for connection, which has led to the emergence of many invalid connection.

Therefore, Lin Hong adjusted the band to 15 meters, and he decided to aim the papaya abroad.

......

Northwest area of Beijing.

The whole engineering room was very quiet. He only heard the electric keys dripping. Duan Fei was sitting on the callstand, wearing headphones and setting up a stall CQ call on the 20-meter band. Every once in a while, he would set up a QSO connection. Immediately, he immediately pulled out a square handkerchief with his pen. Copy the other party's call sign, frequency and other parameters on the small white paper. After a complete connection was over, he waved his hand, and a member of the amateur radio association next to him immediately took away the white paper and gave it to an MM in front of the personal computer to enter the data into the software.

And the MM in front of the computer also reports all kinds of prompt information that constantly appears in the software in the computer from time to time, so that Duan Fei and Xu Wenle can adjust their respective communication strategies in time.

In front of another radio station, Xu Wenle also listened carefully to the signals sent by other hams. Once he found that there were ham signals from areas or countries that had not yet been established, he immediately took the initiative to connect. After establishing QSO, the two exchanged business card information with each other as soon as possible. After copying, say "73" to each other to end the connection.

Of course, due to the restrictions of the rules of the game, the two of them cannot connect or send signals at the same time. In order to avoid a "red card" or a "yellow card" and thus completely lose the qualification to win the prize, a physical interlock mechanism has long been established between the two radio stations. As long as one of them is connecting or sending signals, the other cannot work.

The effect of this 160M ultra-long antenna is really different. According to past experience, the background noise at this moment should be very intense.

Because with the awakening of the whole city, all kinds of invalid radio waves in the air are filled with it, which often form a very powerful interference layer, which surrounds the whole city, just like an electromagnetic layer covering the city with a "shield", regardless of the enemy and the enemy, whether it is the signal to go out or come in. The signal will be processed twice by this "electromagnetic layer". After such a tossing and turning, the original "59" signal may immediately become a "46" or "36" signal.

However, this time, due to the powerful antenna and the change in the position of the competition, both receiving and sending signals are very strong. Everyone is very happy to hear the "599" signal report from other hams.

On the wall of the front of the engineering house, there is a huge world map and a slightly smaller map of China. On the map, the "borders" and "zoning boundaries" of all regions have been re-divided according to the national division method of the radio industry.

Xu Wenjing is holding a small red flag and inserting it on the map of China at this moment. Although there is also a map function in the LOGGER32 software, because the monitor is too small, it does not look very convenient, so she finally decided to hang two maps on the wall and update the "occupied" areas in time. This It looks more clear at a glance.

Everyone sits in their own affairs in an orderly manner. Except for a few people, many people are not the first time to participate in the competition. In addition, after many drills before the game, they naturally know what they should do at this moment.

Compared with SSB's voice call mode, the CW telegram communication mode is indeed a little quieter. In the view of a layman like Zhong Yun, he just sits there quietly, saying nothing, and always presses. It's a little too boring. I can't feel the tension and excitement of international competitions at all. Love.

She and the photographer stood next to each other, trying to ask something, but they were afraid of interfering with their game.

So Zhong Yun had to run to Xu Wenjing and helped her put a small flag on the map. As for how to insert, I can only whisper to Xu Wenjing.

After about half an hour of progress in the competition, the communication efficiency of Duan Fei and Xu Wenle began to slow down. Sometimes the paper copied in his hand had to waste several pieces, so it was not easy to have an effective connection that copied relatively complete.

"It can't go on like this." Duan Fei took off the headphones a little impatiently and said.

The human interference signal in the air has seriously affected his communication efficiency.

"What's wrong?" Xu Wenle took off his headphones and asked.

Because he operates the coefficient platform, he focuses on some new characters that do not appear in the areas they have occupied, so he doesn't know where Duan Fei is depressed.

Other people also stopped their work one after another, with a look of doubt on their faces.

"Now there are too many rookies in the 20-meter band in China. Many people don't know that we are participating in the competition at all. To establish a connection, we have to explain it in detail to the other party. This is too time-consuming."

Wu Bai frowned and thought for a moment and suggested, "Then let's not care about the domestic division for the time being. Let's connect with Japan and hams in Southeast Asia first."

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Continue to update three times today. If you have tickets, please recommend it. One more chapter will be updated at 8 p.m.!