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That's impossible. Even with a high-power radio, it is unlikely to reach several thousand kilometers. Do you think you can receive radio programs thousands of kilometers away? Moreover, the state has strict control over the power and channels of radio stations.
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No, unless it's NASA's, it's also satellite-based
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As long as there is a relay station or a relay system, it is fine.
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No, you're talking about the radio.
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Hehe! I've thought about this question too. Although now it is not yet possible. But who's to say that today's technology is impossible?! May we all live to that day!!
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Hehe, even if there are ordinary people, it is impossible to use it, if they all use such walkie-talkies, won't the world's mobile phone manufacturers all have to starve to death?
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A walkie-talkie instead of a mobile phone!
Powerful enough. Calls in the city.
Even a good walkie-talkie is only 2-3 km.
Non-vehicle, no relay).
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It turns out that the landlord wants to save phone bills, sweat, if there is such a strong mobile phone, it will not be so popular.
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If this kind of product appeared on the market, it is estimated that China Mobile and China Unicom would have collapsed long ago.
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Hah, is there such a thing? Just eliminate mobile phones! Let's buy a walkie-talkie together.
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What I know: Yes, but you can't use it, military walkie-talkies are generally supported, they have dedicated signal towers, but at most about 100 kilometers! Generally if you want to be better, Motorola's supports about 3-5 kilometers!
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Human: Regarding the talking distance of the walkie-talkie, we need to understand the type and environment of the walkie-talkie. Generally speaking, an ordinary walkie-talkie can talk about 5 kilometers at most in an unobstructed open area.
In complex environments such as cities, mountains and forests, the call distance will be greatly affected, and it may only be about 1-2 kilometers. Of course, there are also professional walkie-talkies, the prerequisites for use are very important, if there is an occlusion, buildings, etc., will affect the signal transmission, the more open the place of use, the farther the call distance, but under normal circumstances, the call distance is about 20 kilometers that is called Kaike. In short, for the walkie-talkie call distance, it needs to be considered comprehensively in specific scenarios.
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The walkie-talkie can talk up to 2-3 km.
The general communication distance within 2-3 kilometers can be regarded as short-distance communication, for individual users, you can buy civilian walkie-talkies. For unit users, you can purchase a low-power walkie-talkie through the application, and if you want to ensure the communication effect, you can choose a professional conventional walkie-talkie.
If you need to communicate within the city limits, and the communication distance is within 3-10 kilometers, you can consider buying a professional walkie-talkie. If it is farther away, it is best to use the base station to communicate with the handheld walkie-talkie, or the vehicle station to communicate with the vehicle station, and we can use the car walkie-talkie with a relatively large output power.
Walkie-talkie classification
Handheld wireless walkie-talkie is a kind of small size, light weight, low power wireless walkie-talkie, suitable for handheld or bag, easy for personal carrying, can communicate in the march, its power is generally VHF frequency band does not exceed 5W, UHF frequency band does not exceed 4W.
The vehicle-mounted wireless walkie-talkie is a kind of power supply that can be installed on vehicles, ships, airplanes and other means of transportation directly powered by the vehicle, and is mainly used for transportation, production scheduling, security command and other services. Its volume is large, and the power is not less than 10W, generally 25W. The maximum power is 56W for VHF and 50W for UHF, and the communication distance can reach more than 20 kilometers.
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Summary. Hello dear. The communication distance of general walkie-talkies is within 2-3 kilometers, professional walkie-talkies are within 3-10 kilometers, commercial walkie-talkies are between 800 meters and 8 kilometers, and civil walkie-talkies are shorter, with an open space of 3 kilometers.
Special walkie-talkies can reach up to 10 km.
Hello dear. The communication distance of the general walkie-talkie is within 2-3 kilometers, the professional walkie-talkie is within 3-10 kilometers, the commercial walkie-talkie is between 800 meters and 8 kilometers, and the civil walkie-talkie is shorter, and the open space is 3 kilometers. Special walkie-talkies can reach up to 10 litres.
Dear, expand the walkie-talkie for you, without any network support, you can talk, no talk hole Bifei generated, suitable for relatively fixed and frequent call occasions, by the shell, host, battery, belt clip, seat charge, antenna composition. There are three categories of walkie-talkies: analog walkie-talkies, digital walkie-talkies, and IP walkie-talkies.
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Generally speaking, the farthest communication distance of a single-band wireless microphone can reach less than 5 kilometers, and the farthest communication distance of a dual-band wireless microphone can reach less than 20 kilometers. Reason: The working frequency of a single-band wireless microphone is fixed, the transmitting power is lower, and the communication distance is shorter, while the dual-band wireless microphone can automatically adjust the working frequency and has a larger transmitting power, so the dual-band wireless microphone has a longer communication distance.
Features: 1. The dual-band wireless microphone has a smooth automatic frequency hopping technique, which can automatically jump to the current frequency without interference to ensure the stability and efficiency of communication. 2. The dual-band wireless microphone has the characteristics of strong anti-interference ability, high transmission power and high security, which can meet the data transmission needs in different environments.
3. The dual-band wireless microphone supports full-duplex communication, which can send and receive signals at the same time, and two-way communication can be realized. Precautions: 1. When using dual-band wireless microphones, attention should be paid to maintaining sufficient communication distance to avoid communication interruption.
2. When using dual-band wireless microphones, the interference of high-voltage lines and electromagnetic fields should be avoided, so as not to affect the stability of communication. 3. When using dual-band wireless microphones, try to avoid elongating the antenna, so as not to affect the communication distance.
The frequency is right, and the frequency of one shift is wrong.
Refer to the instruction manual of the North Peak walkie-talkie.
This is adjusted frequency stepping.
It is generally divided into several grades, namely: 5,625,1m (1m refers to one decimal place). >>>More
With the rapid development of the domestic economy, the number of walkie-talkie brands has surged, and there are hundreds of well-known and unknown domestic walkie-talkie brands alone. However, although there are not many of the top ten domestic walkie-talkie brands entering the international market, they are all well-known brands. For example, Hytera's walkie-talkie products have been distributed in more than 100 countries and regions around the world, and have nearly 30 branches around the world. In the world, the company's product shipments ranked second.
One, no. The length of the antenna should be a multiple of half of the frequency, but the length is not suitable and can be transmitted, but the matching degree is not good, and the quality is reduced. The problem of communication distance is actually the problem of antenna height. >>>More