Lin Hongtonglian's efficiency is very high, due to the processing of his own "signal filter", most of the signals he receives are "59", which means that the signal is very good, not only the strength is good, but also the noise is also very low, if not "59", at least "57" or above.

Basically, once he and other hams establish communication, the probability of missing and repeating listening is very small, unless the other party hesitates and makes a mistake and sends the wrong signal, otherwise it is basically a one-time pass, he completely "copied", and then "73".

However, Lin Hong still felt that this efficiency was really a bit low. He had expected this situation for a long time, most of the domestic ham playing radio time is not very long, the basic skills are relatively weak, especially the Morse code is not familiar with a lot, the signal sent out often has to be corrected, which leads to the process of Unicom needs more time.

Lin Hongtong connected to the ham, it can be seen from the call sign that most of them have a fourth-level certificate, a small number have a third-level certificate, and he has not found one of the second-level certificates.

In addition, as time went by, Lin Hong found that more and more "interference" signals began to enter the channel, that is, some unknown hams found that the signal suddenly surged during this period, and many people had been "setting up stalls" calls, so they felt very and responded one after another, and established contact with the contestants to ask about relevant content.

This part of the people, basically have never heard of the ham of the cqww_dx competition, and most of them are just getting started, the efficiency of not connecting is unbearable, and there is no basic common sense, and you have to spend a lot of words to explain, and you can't understand what you are saying for a long time.

If this is okay in normal times, everyone has time, and with the spirit of "fraternal" ham, everyone will basically be enthusiastic to communicate with them to explain. But now it's the time of the game, and every second is very precious, so you can only disconnect and find other targets to communicate, which leads to a lot of invalid communication.

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

……

The northwest area of the capital.

The whole engineering room was very quiet, only to hear the electric keys were ticking, Duan Fei was sitting on the call desk, wearing headphones and setting up a booth on the 20-meter band CQ call, every once in a while, he would establish a QSO communication, and immediately he immediately used a pen to pull out a square handkerchief of white paper and copy the other party's call sign, frequency and other parameters. When a complete communication was over, he waved his hand, and a member of the amateur radio association next to him immediately took the blank sheet of paper and handed it to the software that was being made in front of the personal computer for data entry.

And the mm in front of the computer also reported various prompts that constantly appeared in the software on the computer from time to time, so that Duan Fei and Xu Wenle could adjust their communication strategies in time.

In front of another radio station, Xu Wenle was also listening carefully to the signals sent by other hams, once he found that there was a ham signal that had not yet established a communication area or country, he immediately took the initiative to communicate, after the establishment of QSO, the two exchanged business card information with each other at the fastest speed, and after copying it, they said "73" to end the communication.

Of course, due to the restrictions of the competition rules, the two of them cannot communicate or send signals at the same time at the same time. In order to avoid a "red card" or "yellow card" for a foul and thus completely disqualify for the award, a physical type of interlock mechanism has long been established between the two radio stations, as long as one of them is communicating or sending signals, the other will not work.

This time, the 160m ultra-long antenna has a different effect. Based on past experience, the background noise should be very intense at the moment.

Because with the awakening of the whole city, all kinds of invalid radio waves in the air are filled with it, often forming a very powerful interference layer, surrounding the entire city, just like shrouding the city with a "protective shield" like an electromagnetic layer, regardless of whether it is a signal to go out or a signal to come in, it will go through the secondary processing of this "electromagnetic layer", and the original "59" signal may immediately become a "46" or "36" signal after such a toss.

However, this time, due to the powerful antenna and the change in the position of the participants, the signals for both receiving and sending were very strong, and everyone was very happy to hear the "599" signal reports from other hams.

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

Xu Wenjing is holding a small red flag to insert it on the map of China at the moment, although there is also a map function in the logger32 software, but because the display is too small, it doesn't look very convenient, so in the end it was decided to hang two maps on the wall, and update the various areas "occupied" in time, so that it looks more clear at a glance.

Everyone sat down in an orderly manner, except for a few people, many of them were not participating for the first time, plus after many rehearsals before the game, they naturally knew what they should do at the moment.

Compared with SSB's voice call mode, CW's telegraph communication method is indeed too quiet, in the eyes of a layman like Zhong Yun, just sitting there quietly, not saying a word, always pressing and pressing, it is really a bit too boring, and I can't feel the tension and excitement of the international competition at all.

She and the photographer stood nearby, wanting to ask something, but were afraid to interfere with their game.

So, Zhong Yun had no choice but to run to Xu Wenjing and help her plant a small flag on the map. As for how to insert it, I can only whisper to Xu Wenjing.

After the game progressed for about half an hour, the communication efficiency between Duan Fei and Xu Wenle began to slow down, and sometimes several pieces of paper had to be scrapped in their hands, so that they finally had a more complete and effective communication.

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

The presence of man-made interference signals in the air has seriously affected his communication efficiency.

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

Since he was operating the coefficient station, focusing on some new countries that did not appear in the area they had occupied, he didn't know where Duan Fei's depression was.

The others also stopped what they were doing, and there were puzzled expressions on their faces.

"Now there are too many rookies in the 20-meter band in China, and many people don't know that we are participating in the competition, and we have to explain in detail to each other to establish a communication, which is too time-prolonging."

Wu Bai frowned and thought for a while, and suggested: "Then we don't care about the domestic division for the time being, and first connect with Japan and ham in Southeast Asia." ”

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Continue the three watches today, please recommend it if you have a ticket, and then update the chapter at eight o'clock in the evening!

Seek demons