Send Message
Privacy statement: Your privacy is very important to Us. Our company promises not to disclose your personal information to any external company with out your explicit permission.
What is the difference between the Category 6 network cable and Super Category 6 network cable? The Category 6 network cable usually refers to the Category 6 unshielded twisted pair cable. Super six cable is a network cable whose performance is better than that of a Category 6 cable. The six types of network cables and super six types of network cables have been added with insulated cross frames in their structures, and the four pairs of cables of the twisted pair have been placed in the four...
The most direct cause of aging failures of wire and cable is breakdown and breakdown. There are many fierce offensives that reduce the amount of conductive insulation. According to the actual operating experience, the following situations can be summed up. 1) Cable aging causes: external damage. From the operation analysis in recent years, especially in the high-speed economic development of Haipu East, a considerable number of cable faults are caused by mechanical damage. For example, when the...
Flame-retardant cables, halogen-free cables, fire-resistant cables, clear concepts and advantages and disadvantages Flame retardant cable is characterized by retarding the spread of flame along the cable so that the fire will not expand. Because of its low cost, it is a large variety of cables used in fire protection cables. Whether it is a single cable or a bundled cable, the cable can control the spread of the flame within a certain range when it is burned. Therefore, it is possible to avoid...
Waterproof cable: It is to prevent water from entering the interior of the cable structure. The structure and material with waterproof function are adopted on the cable sheath. Water blocking cable: It is the assessment that allows water to enter the interior of the cable, but it is not allowed to penetrate to the specified length under the specified conditions. Water blocking cable is divided into conductor water blocking and cable core water blocking. Conductor water blocking structure:...
【China Aluminum Industry Co., Ltd.】 Copper core cable is an ideal conductor material because of its high conductivity, high mechanical strength, easy processing, welding, convenient construction, and corrosion resistance. The aluminum core cable has a lower conductivity than copper, and the aluminum has a small specific gravity. The mechanical strength of the aluminum core cable is worse than that of the copper core, the aluminum resources are wide, the price is low, and the connection of the...
introduction The sector cone antenna is a short-wave broadband antenna with superior performance, which is widely used in communication fields such as broadcasting and maritime transportation. But when its frequency of use is low, the area is larger. Therefore, it is necessary for the miniaturization of its low-frequency use. Through effective loading means, it can not only meet the impedance matching characteristics, but also meet the needs of communication performance. 2 Antenna form and...
The antenna pattern is also called radiation pattern (radiation pattern) and far-field pattern (far-field pattern). The antenna gain cannot be obtained from the pattern, but the directivity coefficient is obtained from the pattern. Antenna gain = directivity factor * antenna efficiency. Therefore, it is certain that the directional coefficient is greater than the gain. The antenna gain is mainly manifested through the test of the pattern. There are many kinds of test systems for testing the...
Smart TVs, smart robots, smart sockets, smart switches... Do you feel that our lives have been surrounded by various smart terminal products? SKYLAB knows that you already have a spider web extending in all directions in your mind. But in essence, most smart terminal products use wireless communication technologies: including WiFi, Bluetooth, and IEEE 802.15.14 technical standards (such as LORA, Sigfox, NB-IoT, etc.). Among them, the mainstream wireless communication technology of the Internet...
In the Internet age, there is no network feeling instantly out of touch with society, so you can hear the question: "Does your home have WiFi? What is the WiFi password?" Then the question is, how does the WiFi signal come from? What is the relationship between this WiFi signal and the router and WiFi module? In this article, SKYLAB will elaborate for you one by one. First of all, let's take a look at the relationship between WiFi signal and router and WiFi module; WiFi module,...
Whether it is a TV or a computer, etc., the antenna needs to be connected outdoors, but the outdoor antenna will withstand wind and sun for a long time, and it will inevitably rust, which will easily cause the signal of the TV and computer to be affected. Therefore, when we buy outdoor antennas, it is best to buy genuine outdoor antennas. So, what are the outdoor antenna brands? As more and more outdoor antennas emerged, many groups began to pay attention to outdoor antenna brands . Now I will...
2.4GHz plate antenna Product model: HDJ-2400L16 Product description: HDJ-2400L16 plate antenna is our company's communication system for the 2400MHz frequency band ... Main parameters: Model TDJ-2400L16 frequency ... 2.4GHz horizontally polarized omnidirectional plate antenna Product model: HQJ-2400H9 Product description: HQJ-2400H9 horizontally polarized omnidirectional antenna, with high gain, frequency bandwidth, good standing wave characteristics, etc ... Main parameters: Model...
Introduction: After many people have successfully made directional antennas, their ambitions have grown larger and larger, because since an array of directional antennas has succeeded, why not make a double-row directional antenna? That ’s right! We just want a huge Ambition, moving towards the goal you want to achieve, so that our technology will improve, which is also the spirit of amateur radio players. As long as you complete the experiment of the previous unit 144MHZ nine-section Yagi...
The importance of antenna element length You will find that the following introduction emphasizes that the length of the antenna is 1/2 or 1/4 wavelength, why? When the length of the antenna is not correct, the impedance and the design value are much different, resulting in a reduction in transmission efficiency. For example, the impedance of a properly fabricated half-wave dipole antenna is 75 ohms purely resistive. If its length is halved, its impedance becomes 15-400j ohms, that is, 15 ohms...
Smart antenna is the combination of array antenna and advanced signal processing technology, extending signal processing from time domain and frequency domain to space domain, using the spatial information of the received signal to complete the space domain filtering and positioning, thus forming a space-time processing capability Antenna. Compared with the traditional FDMA (Frequency Division Multiple Access), TDMA (Time Division Multiple Access), and CDMA (Code Division Multiple Access)...
Swiss positioning and wireless chip and module manufacturer u-blox announced that its global positioning and embedded 2G / 3G wireless technology has been adopted by MobileHelp, a leading US technology provider of M-PERS (Mobile-Personal Emergency Response System). Based on u-blox's LISA 2G / 3G wireless modem module and MAX GPS module, the complete system developed by MobileHelp includes a compact portable alarm device, which can be used not only at home or near home, but also when...
The latest generation of Wi-Fi technology supports today's and future demanding applications Austin, Texas, USA, June 19, 2013 -Wi-Fi® technology has once again achieved significant performance improvements. Today, Wi-Fi Alliance® launched the Wi-Fi CERTIFIED ™ ac certification program. Relying on the high-performance foundation of Wi-Fi CERTIFIED n, Wi-Fi CERTIFIED ac products can provide full home network coverage at twice or even twice the speed of older Wi-Fi products, and can easily...
Since 2013, the global TD-LTE network has entered a period of vigorous development, and domestic TD-LTE network deployment and development are also in full swing. At present, TD-LTE deployed in China mainly adopts the world's most advanced 8-channel technology, and the impact of antennas on network performance is more and more concerned. This article summarizes and analyzes the problems during the first phase of TD-LTE deployment and combines with the latest developments in the current...
With the continuous development of modern communication technology, mobile communication has entered the era of LTE. As of press time, 152 LTE networks have been deployed around the world, and it is expected to reach more than 300 in 2014. Many mobile operators will face 2G networks such as GSM, CDMA, WCDMA, CDMA2000, TDS-CDMA and other 3G networks and TD-LTE, LTE-FDD and other networks. Many problems such as inter-system interference and smooth transition of later network technologies. Mobi...
Smart TVs, smart robots, smart sockets, smart switches... Do you feel that our lives have been surrounded by various smart terminal products? SKYLAB knows that you already have a spider web extending in all directions in your mind. But in essence, most smart terminal products use wireless communication technologies: including WiFi, Bluetooth, and IEEE 802.15.14 technical standards (such as LORA, Sigfox, NB-IoT, etc.). Among them, the mainstream wireless communication technology of the Internet...
We know that the signal generated by the wireless bridge must be transmitted through the antenna, so the antenna has an indispensable position in the wireless monitoring system. To solve the problem of routing coverage, most people choose high-gain antennas, but some users do not know much about high-gain antennas and do not know what is the difference between high-gain antennas and ordinary antennas. The following editors explain it in the form of a question and answer . 1.What is the antenna...
Purchase knowledge of car antenna and base station antenna Car antenna Car antenna refers to the mobile communication antenna designed to be installed on the vehicle, the most common is the sucker antenna. Since the suction cup antenna is easy to install and place, the suction cup antenna is often used to replace the base antenna in some simple setting occasions. On-vehicle antennas have shortened, quarter-wavelength, central plus-sensing, five-eighth-wavelength, and double-half-wavelength...
At the end of last year, Guangzhou Metro and a Shenzhen company set up a joint venture to study the coverage of WiFi in the subway. At that time, the person in charge of the Shenzhen enterprise said that in July this year, it will give priority to the trial of three or four lines with dense crowds, and it will be fully open next year. But now it is at the end of August, there is still no line that can use WiFi. Guangzhou Metro said that it did not say that WiFi will be opened this year....
What is the wifi probe? WiFi probe technology refers to the identification of smart phones or WiFi terminals (notebooks, tablets, etc.) with WiFi enabled near the AP (Wireless Access Point) based on WiFi detection technology. The WiFi probe can be recognized without the user accessing WiFi. User's information. When we walk into the probe signal coverage area and our wifi device is turned on, our device can be detected by the probe, whether it is IOS or Android system can easily detect and...
Editor's note: What I want to introduce today is a part of a car. It is like a ghost. Sometimes it appears in a conspicuous position, sometimes it can be found; some have a long look, others are like designers. A masterpiece of hangovers. If in the past, you will definitely say that it is insignificant, but look to the future, especially in the field of autonomous driving, it will play a pivotal role. What I want to introduce today is the new car antenna system. Thanks to the development of...
Privacy statement: Your privacy is very important to Us. Our company promises not to disclose your personal information to any external company with out your explicit permission.
Fill in more information so that we can get in touch with you faster
Privacy statement: Your privacy is very important to Us. Our company promises not to disclose your personal information to any external company with out your explicit permission.