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How many ohms is the resistance value of Category 5E (cat 5e) cable?
by admin on 21-09-25
Depending on the material of the network cable, the resistance value is different. 1. Copper-clad steel network cable: resistance of 100 meters is about 75-100 ohms. This cable is also the cheapest cable on the market, and the effect of communication is not very good. 2. Copper-clad aluminum net...
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Electrically Tuning Antenna
by admin on 21-09-03
Some explanation of Nouns: RET: Remote Electrical Tiling RCU: Remote Control Unit CCU: Central Control Unit Mechanical and electrically tuning antennas 1.1 Mechanical downtilt refers to the direct adjustment of the physical tilt angle of the antenna to change the beam coverage. Electrical d...
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The difference between digital walkie-talkie and analog walkie-talkie
by admin on 21-08-06
As we all know, the walkie-talkie is the key device in the wireless intercom system. The walkie-talkie acts as the link of voice transmission in a wireless communication system. The digital walkie-talkie can be divided into frequency division multiple access(FDMA) and time division multiple acces...
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A quick overview of the global 5G spectrum
by admin on 21-07-29
A quick overview of the global 5G spectrum For now, the latest progress, price, and distribution of the world’s 5G spectrum following:(any inaccurate place, please correct me) 1.China First, let’s look at the 5G spectrum allocation of the four major domestic Operators! China Mobile 5G freq...
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With 5G, do we still need private networks?
by admin on 21-07-14
In 2020, the 5G network construction entered the fast lane, the public communication network(hereinafter referred to as the public network) is developing rapidly with the unprecedented situation. Recently, some media reported that compared with the public networks, the private communication netwo...
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What can we do when repeater self-excitation?
by admin on 21-06-23
What can we do when repeater self-excitation? What is the mobile signal repeater self-excitation? Self-excitation means that the signal amplified by the repeater enters the receiving end for the secondary amplification, resulting in power amplifier work in a saturated state. The repeater self-exc...
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How to explain and calculate dB, dBm, dBw…what is the difference between them?
by admin on 21-06-17
How to explain and calculate dB, dBm, dBw…what is the difference between them? dB should be the most basic concept in wireless communication. we often say “transmission loss is xx dB,” “transmission power is xx dBm,” “antenna gain is xx dBi” … Sometimes, this dB X may be confused and even...
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Huawei Harmony OS 2.0: Here is all you need to know
by admin on 21-06-11
What is Huawei Harmony OS 2.0 trying to do? I think the point is, what is the IoT (Internet of Things) operating system? As for the topic itself, it can be said that most of the online answers are misunderstood. For example, most reports refer to the embedded system which runs on a device and Har...
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What is the difference between 5G and 4G?
by admin on 21-06-02
What is the difference between 5G and 4G? Today’s story begins with a formula. It’s a simple but magical formula. It is simple because it only has three letters. And it’s amazing because it is a formula that contains the mystery of communication technology. The formula is: Allow me to ex...
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The best walkie talkie in 2021—connecting the world seamlessly
by admin on 21-05-27
The best walkie talkie in 2021—connecting the world seamlessly Two-way radios, or walkie-talkies, are one of the communication ways between parties. You can rely on them when cell phone service is spotty, they can keep in touch with one another, and they are a crucial tool to stay in the wilderne...
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What is the difference between 5G and WiFi?
by admin on 21-05-20
Actually, the comparison between practical 5G and WiFi is not very appropriate. Because 5G is the “fifth generation” of mobile communication system, and WiFi includes many ”generation” versions such as 802.11/a/b/g/n/ac/ad/ax, it’s a bit of like the differences between Tesla and Train. ...
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5G challenges — Is 5G useless?
by admin on 21-05-12
Is 5G useless? —How to solve 5G’s challenges for communication service providers? The construction of new infrastructure is of great significance to the country’s economic development. 5G network construction is an important part of the construction of new infrastructure. The combinati...
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