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Shenzhen Atnj Communication Technology Co., Ltd.
About us
Your Professional & Reliable Partner.
Shenzhen ATNJ Communication Technology Company was founded in Nanshan District, Shenzhen in 2010 with over 900sqm factory. ATNJ focuses on the production and development of micro power signal booster, wireless signal repeater, Indoor Signal Distribution System and antenna series. With professional engineers, workers and with senior management personnel, the group maintains high-speed development.Main products: small, medium and high power 2G,3G,4G, and 5G signal repeaters with multi-frequency ...
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Year Established

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Million+
Employees

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Million+
Customers Served

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Million+
Annual Sales
China Shenzhen Atnj Communication Technology Co., Ltd. 100% SERVICE
ATNJ provide 7x24 online service here. Meanwhile ,you can contact us for knowing the detail by the above contact info to the real-time calling or video of the factory. (Working time:8:30 --18:00 China GMT+8:00)
China Shenzhen Atnj Communication Technology Co., Ltd. MANUFACTURING
ATNJ have itself factory with advanced automatic machines, strictly process control system and can manufacture the repeater to meet your demand.
China Shenzhen Atnj Communication Technology Co., Ltd. Multi-platform presentation
ATNJ products hot sale in different kind online platform like Ebay, Amazon,Aliexpress,Alibaba, Made in China ,etc. Meanwhile providing repeater for many famous dropshipping online store in google for years.
China Shenzhen Atnj Communication Technology Co., Ltd. Rich in Repeater categories
ATNJ provided rich kind of repeater system for customer choice.Pico/High power gsm 2G,3G, LTE4G, NR 5G signal repeater,Digital and Optical Fiber repeater.

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Cases & News
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Signal Coverage Case Of Eight Bands All-network Booster
ATNJ Mobile Signal Repeater.pdf   Time: Dec.28 2022 Address: Tomorrow club, Jiangmen City, Guangdong Province Requirements: Calling and data signal coverage of all networks     Tomorrow Club is a newly-decorated bar. The bar is luxuriously decorated and the exterior walls are decorated with steel plates, making the mobile phone signals inside the bar, whether it is China Mobile, China Unicom, or China Telecom communications, the call and Internet signals are very poor, even it’s a very hard to send or receive message for wechat. The renovation of the bar is completed and the opening is imminent. It is imminent to solve the problem of the three network mobile phone signal inside the bar. Because the interior area of the entire bar lobby is about 500 square meters, 8-band equipment is used for customers, and two ceiling antennas are promoted as a lobby coverage solution. The advantage of using this solution is: the China Mobile low-frequency call GSM900 and high frequency call DCS1800, China Telecom call CDMA800, and China Unicom 3G call WCDMA2100 are amplified and covered to effectively solve the needs and problems of three-network calls.   At the same time, the 4G Internet access signals FDD-LTE1800M of China Unicom and China Telecom, as well as China mobile 4G Internet frequency bands D, E, and F were automatically locked, which were effectively amplified to solve the needs and problems of these three networks.   Besides, the biggest advantage of this 8-band all-network booster is that no matter when the operator adjusts these base stations, it will not affect the user ’s three-network call and three-network data experience, because all existing frequency bands are all covered.   The designed scheme is shown in the following figure,   Use two LPDA antennas to receive wireless. One is to receive and transmit CDMA800M, GSM900M, DCS1800M and WCDMA2100, and the other antenna is to receive and transmit FDD-LTE 1800M and TDD-LTE1900M / TDD-LTE2300M / TDD-LTE2600M (the three-way signal D, E, and F bands for mobile 4G are automatically selected by the device).   Wiring Construction: After the completion of the construction, test that the signal strengths of the first channel are shown below: The first channel has a full output power as around +17dbm.   The signal strengths of the second channel are shown below: 4G FDD-LTE1800M of China Unicom and Telecom has a full output power in second channel: +17dBm.   The mobile 4G channel automatically locks the F-band TDD-LTE1900M with the best signal strength + 17dBm full power output.   In the normal working state of each frequency band of the equipment, the signal strength test of each frequency band in the hall is as follows:   The signal strength of the three major operators, whether it is calling signal or data signal, has reached full bar. In addition, when a lot of people test the calling and data signal at the same time in the bar, the signal strength keeps stable to meet the demands.   Dot test of China Mobile and China Unicom signal was performed, it shows the signal coverage and signal strength are balanced. As shown below, Summary: In case of using 8 bands full-network booster, there is no need to consider the working frequency, because all frequency of signal operators are included. Therefore, when design the construction plan, we only need to consider the coverage area, range and required antenna and the length of cables.   It is best to install two LPDA outdoor antennas in an upside down position, pointing to different directions, so that the six sets of values on the screen of the device all work to the maximum output value.
KFC Signal Coverage
ATNJ Mobile Signal Repeater.pdf Time: Feb.01, 2023 Address: KFC Restaurant ( CaiDe Town) Requirements: 4G signal coverage of China Unicom and China Telecom   KFC Restaurant (CaiDe Town) is located on the first floor of Caide Town, CaiTian Road, Futian District, Shenzhen. The location of a KFC restaurant is usually in the center of various business districts, where are usually covered by great signal of the three major signal operators.   After the site survey, we found the signal of China Mobile is very good, and no need to consider China Mobile signal. However, 4G signal of China Unicom and China Telecom are weak on the checkout counter, kitchen, corner, and office. The reason is that China Mobile had signal coverage inside of the building. Therefore, people could only receive China Unicom and China Telecom signal from outdoor base station. What’s more, as there is a building in the front of KFC restaurant, it’s normal to have weak signal of China Unicom and China Telecom in KFC restaurant.   To solved the mentioned weak signal problem, we only need to aim at the exact signal frequencies and make signal coverage at the following positions.     Signal survey result as follows,   According to the above signal data, we could tell that China Mobile had a great signal distribution inside, but China Unicom and China Telecom not. Therefore, we need to transmit the outdoor signal of China Unicom and China Telecom to indoor, then amplify it.   Scheme Design According to the signal demands and the site survey, we use a high-power repeater with six indoor antenna to amplify signal in the checkout counter, kitchen, corner, and office. Topology picture as follows,   Wiring and construction Considering the clients flows and business time of KFC restaurant, the construction time was arranged to avoid the rush hour, and the whole construction is noiseless and dust free. Besides, the construction of kitchen was arranged after 21:30.   Except the indoor antenna in lobby, all the other antennas are installed into the ceiling without any exposure. Also, the outdoor antenna was installed below of the signboard, where won’t be look strangely.   Effect Test After signals are amplified, the signal strength is tested as follows,   Except no change on China Mobile signal, there are a great improvement of China Unicom and China Telecom signal. Especially the delivery clerks could have a better experience to receive takeout order and arrange delivery. The signal coverage offers a better signal experience for client and KFC staff.   Summary As KFC restaurant is usually covered by great signal of the three major signal operators, the signal problems are more likely that some frequencies are not covered. Therefore, an accurate site survey are necessary, then we could use a suitable repeater with correct frequency to amplify the specific signal to meet the demands of signal coverage.   Besides, as it’s a KFC restaurant, we have to consider the construction time when it won’t affect the business with easiest construction method.
What is the fundamental difference between 5G and 4G?
With the progress of science and technology, people pursue a better life and better and better network experience, from 2G to 3G and then to 4G. Now many countries and regions begin to use 5G network, and even some countries are studying 6G. What's the difference between 4G and 5g? In short, it is a fast! G is the abbreviation of generation, which means the era. Since it is an era, the difference is great. We can't just talk about speed. Of course, speed is also one of the very important dimensions. ATNJ Mobile Signal Repeater.pdf   1. Speed. 5G and 4G will have huge differences in transmission speed. If you don't know what the huge difference is, you can compare the previous green car with the current high-speed railway. The current high-speed railway will make medium and short distance travel give up aircraft. However, in the era of green train, there are aircraft. If the economy allows, few people will give up aircraft. 2. All things are interconnected. If you plug a mobile phone card into your car in the existing 4G network, it can be driverless. Even if vehicle identification, obstacle identification and other technologies pass, it may not start well. In the 5g era, all things are interconnected. Many driverless cars send online signals to each other. With the instant sending of various low delay signals, driverless will be safe for more people to use in the 5G Era.   3. Communication standard: according to Moore's law, when the price remains unchanged, the number of components that can be accommodated on the integrated circuit will double every 18-24 months, and the performance will also double. The 4G standard has been launched for so long, and the existing communication methods and rates are designed based on 4G. However, the current hardware development speed is so fast that the existing network inevitably can not fully keep up with the speed of hardware upgrading. After such a long time of development, China, now the world's largest communication consumer, can better meet the needs of the future in the new era, and the starting point of the standard is higher, Compared with the 4G standard, it is subversive. Such network speed has brought great convenience to our life and work. The difference between 4G and 5g lies in the fast and slow network speed, high implementation efficiency and time saving.

2022

04/29

Minor problems that may be encountered after the installation of the mobile phone signal amplifier
Detailed description of the adjustment of the mobile signal amplifier:   1. The indoor antenna installation should be away from the outdoor antenna to prevent mutual influence. Indoor antennas need to be separated from outdoor antennas by walls. 2. The indoor antenna should be installed at an angle of 2 meters above the interior wall of the house or inverted on the ceiling ceiling. 3. All kinds of connectors must be wrapped with adhesive tape to prevent water seepage from being oxidized, resulting in a smaller coverage of data signals in the house.   Common failures of mobile phone signal amplifiers:   First, after installation, there is no practical effect at all 1. First check whether the display light on the amplifier server can be lit to determine whether the power can be connected 2. Then clarify whether the selection of spare parts such as amplifier servers and wireless antennas can be appropriate, and whether they can be paired with the type of mobile phone card they are using;   3. Determine whether the indoor and outdoor sockets, regulators, and wireless antennas of the amplifier server can be properly connected. Second, after installation, the data signal is improved, but no phone calls can be made   1. Make sure the outdoor antenna is installed properly; 2. Determine that the data signal is stable at the location of the outdoor antenna, and the orientation of the wireless antenna is as biased as possible to the data signal transmission communication base station; 3. Determine the length of the data signal transmission line of the outdoor antenna and the amplifier (preferably not more than forty meters, not less than ten meters);   4. How to never get it, adjust the amplifier with higher power or ask a professional operator to check it comprehensively. Three. , The call sound quality is not very good 1. Adjust the orientation of the outdoor antenna so that the orientation of the wireless antenna is as biased as possible to the data signal transmission communication base station; 2. Change the movement of the data signal transmission line from the outdoor antenna to the amplifier server (the approaching straight line, the route cannot be turned too much, and the right angle of 90° cannot be turned); 3. The route from the outdoor antenna to the amplifier server should be coaxial above 50 ohm-7D as much as possible;   4. Determine whether the distance between the outdoor antenna and the indoor antenna can be too close (too close will generate self-excitation), the specification spacing is above ten meters, it is best to have walls, stairs and other objects isolated, and it is proposed that indoor and outdoor wireless antennas cannot be installed on the same level, to avoid the data signal sent by the indoor antenna is received by the outdoor antenna to generate infinite loop expansion (self-excitation).   Fourth, the data signal has been improved after installation, but the coverage is not large 1. Determine the part where the outdoor antenna is installed has sufficient data signal and strong signal; 2. Make sure that the data signal transmission line from the indoor antenna to the amplifier server is not easy to be too long, the route connector is properly intact, the route raw materials meet the regulations, and the regulator is not connected too much; 3. Appropriately install indoor antennas according to specific conditions; 4. Choose a mobile phone signal amplifier with greater output power.  

2023

02/21