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Coverage Case of ZhengZhang Building

China Shenzhen Atnj Communication Technology Co., Ltd. certification
China Shenzhen Atnj Communication Technology Co., Ltd. certification
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—— Aki Vaattovaara,Sweden

It arrived in time I am very satisfied with the support. The product si in very good conditions. I proved it and works very well.

—— JC Saavedra Libia,Peru

I an very satisfied with the Quality of the product. Also the miss that support me is very kind. she resolved all my doubts perfectly. the product arrived at time as usual.

—— JC Saavedra Libia,Peru

Ms Anne Wang works hard to provide very good service for customers. A pleasure to deal with. Product is as described and good value for money.

—— Lindsay Pettigrew,Australia

Excellent product as describe. Very good seller ! 100% recommended, 100% satisfied ! shipping very fast to Cambodia.

—— loem kom,Cambodia

I have received the repeater in 5/6 days, it is a robust case repeater, it looks nice, and it work perfectly. I suggest this brand repeater. good work

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получил товар. качество и параметры сответствуют описанию. продавец молодец!

—— akbar karaev,Uzbekistan

Super fast delivery and superb service/help from supplier. I haven't had a chance to try out the product but I am confident it will work fine. If not, the supplier is really helpful and I am sure he will assist me with futher installation details

—— Attila Kinkopf,United States

I haven't used the product yet but it looks like a quality product. Wave Luo was very helpful, thank you very much!!!!

—— Shephard Mack,South Africa

ATNJ, You got good products with good services, fast and easy to communicate.

—— Borin SIM,Cambodia

Gracias excelente productos y el envío muy rápido


Very technical and very welll organized and professional. Andrew has been a very helpful salesperson

—— gabriel haddad,Venezuela

Excelent product antennas and power.. its good, working very goog thanks ATNJ,

—— CARLOS GREGORIO,United States

Let’s be honest, the quality of my Vodafone mobile signal at home always left much to desire. I just was too lazy to do anything with it. I was absolutely satisfied with the rates and the quality of the signal that I had everywhere and my own house was an exception. However, the coronavirus pandemic changed everything. I started to spend much more

—— Ali , Spain

I bought this booster for my apartment because I was absolutely dissatisfied with the power of GSM and 4G signals that I had there. But now the situation has changed. Thank you for this booster, I finally don’t feel isolated when I stay at home alone.

—— Abdul Mohammed,Germany

I think that’s a very nice solution for those who suffer from problems with voice services and mobile internet and do not want to create any antennas or smth like that themselves. The price is absolutely fair and the quality is amazing.

—— Lena W.,Finland

I was very happy to see the discount that you offered. I know that quite often companies make discounts on goods that are not popular but in this case, I see that the situation is quite opposite. I like that this device is able to improve calls and the internet speed at the same time.

—— Giulia M.,Austria

Thank you! The booster is super cool for a private house. All the rooms are now covered with the improved signal. Now I can’t understand why we haven’t bought it earlier.

—— Nadine Nacht ,Germany

It’s a very cool booster! Thank you, dear team, for your attention to your clients’ needs and the prices that you offer. You are the best, ATNJ

—— Natalia L.,Norway

My 3G and GSM connection used to leave much to desire. But with m new booster I have practically forgotten all these problems. I really like that this device is so compact but so powerful. Thanks, guys, for your amazing work and fast delivery.

—— Goran N. ,Sweden

I can’t understand why I bought this repeater only 2 months ago and not earlier. That’s a very useful device for those who live in a rural area like my family. The improved quality of connection has significantly improved the quality of our life.

—— Lars M. ,United States

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Coverage Case of ZhengZhang Building

April 5, 2022
Latest company case about Coverage Case of ZhengZhang Building
Date:Apr.12th 2019
Address:ZhengZhang Building, ShenYun Interchange, ShaHe Construction Village, LongZhu Avenue, NanShan District, ShenZhen City.
Requests:China Mobile and Chine Unicom communication signal coverage of the negative layer of ZhengZhang Building
1.The Surrounding Survey
1. ZhengZhang Building is located in NanShan District of Shenzhen City, which has great base station coverage and high quality signal strength.
2. There is a Telecom base station on the top of the building, so the signal strength of Telecom on the negative ground floor is good enough. The base stations of China Mobile and China Unicom are hundreds of meters away from the building, which could be used as signal sources.
3. , On the roof, we checked the communication signal frequency of China Mobile is DCS1800MHZ, signal strength -63db, and communication signal frequency of China Unicom is WCDMA2100MHZ, signal stregnth -57db. Signal strength both of them are quite good.
4. The environmental survey of negative layer. It’s the place to dry-cleaning and store the clothes. There are many workers but no a mobile signal to guarantee the communication.
In some compartments, China mobile signal frequency can’t be detected; try to call 10086 (China Mobile’s service hotline), but no answer. Out of service for China Unicom.
No any layout of the negative ground floor. According to the estimated area of the site is about 800 square meters, and two aisles around the corner. We manually drew the layout and offer solution of antennas’ location as belows.
According to the layout, we have a complete solution as below. As the negative ground floor is empty, the coverage of each antenna could be guaranteed. Due to the length of the cable, FB-12 cables would be adopted to ensure its perfect performance of each antenna.
High power dual band booster DCS1800+WCDMA2100 would be used, its full output power is +23dbm.
3. Construction of cables.
The output power of China Mobile (1800Mhz) & China Unicom (2100Mhz) reach +25dbm and +24dbm, which performs to the full output power perfectly. Refer to below pictures.
Within the three scopes with 5 ceiling antennas, the signal strength is over -85dbm, the calling quality and speed achieves great effectiveness. Below shows the random test of signal strength: China Mobile -63dbm, China Unicom -67dbm, both of them are full bar.
The case- Signal Coverage Solution of ZhengZhang building negative ground floor is very typical with negative ground floor Characteristics: nice signal strength on the roof, no any signal in the negative ground floor, too long wiring construction, few suitable local of antennas. Adopting high power dual band booster and 1/2 RF cables could achieve great output effect and application experience.
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Shenzhen Atnj Communication Technology Co., Ltd.

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