How far is the farthest effective communication distance of the walkie-talkie?

How far is the walkie-talkie from the end? Handheld walkie-talkie works without the relay station. According to the transmit power of the walkie-talkie, the normal and effective communication distance is between 1-6 km. Different transmit power and different communication environments have a great influence on the communication distance of the walkie-talkie. Our article mainly describes the effective communication distance of walkie-talkies in different environments...

In the past sales process, the user's most concern is the distance of the talker, often throwing a series of questions about the communication distance. How far can the walkie-talkie be called farthest? Why are there some places in the same walkie-talkie that are far closer to each other? Is there a walkie-talkie that can shout for 10 kilometers?

In fact, the regular and a certain size of the walkie-talkie manufacturer, whether it is its product brochure, product manual, or the brand's official website will not indicate the communication distance of a model walkie-talkie. If the distance of the walkie-talkie is more favorable to the sales of the product, but the responsible company will not do this, because no company can predict the user's use environment, it is necessary to know that the communication environment plays a decisive role in the communication distance of the walkie-talkie. Therefore, it is impossible to judge the distance of use of the walkie-talkie.

In addition to the external factors of the use of the environment, there are also important technical indicators of the walkie-talkie. For example, the power of the walkie-talkie, the receiving sensitivity, whether the antenna is the original, and whether the antenna is damaged, these will have a certain impact on the communication distance. . Of course, the correct use of the user can also affect the maximum communication distance of the walkie-talkie to a certain extent.

If you ask the salesperson about the communication distance when you buy the walkie-talkie, if he answers you say that his walkie-talkie can pass at least 5 kilometers, or even 8-10 kilometers. Please believe me, if you have not actually tested it at the user's site, you will come to a conclusion. No matter how rich his experience is, it is deceptive and irresponsible.

Commonly used wireless walkie-talkies generally use 130-170MHz; 403-470MHz two frequency bands, these two frequency bands are also the range of frequency bands allowed by national laws or individuals. Under normal circumstances, these two wave frequencies are linearly propagated. Maritime communication is an ideal communication environment for radio intercoms on the earth. Generally, there are no obstacles and little interference, but in reality, it is only possible to hold a walkie-talkie at sea. It is about 10-20 nautical miles. It is because the earth is round. If it is too far apart, it will be blocked by the sea (so the antenna is mounted higher and the distance of the call will be farther).

Obstacle is the most influential factor in signal propagation distance when used in cities. The actual talk distance of a professional walkie-talkie with a power of 5 watts in the city is generally only in the range of 2 to 5 kilometers. In high altitude, more buildings, or relatively sealed rooms, the call distance will be shorter. However, when there is a system base station support, the talk range of the walkie-talkie can reach more than ten kilometers or even tens of kilometers (if the two walkie-talkies are all at a height, it can reach more than ten kilometers).

The 0.5W walkie-talkie sold on the market, some manufacturers' nominal walkie-talkie has a maximum distance of 3 kilometers. In fact, this call distance is only a theoretical calculation data. It is based on the transmit power, which means that the 0.5W walkie-talkie is not. Obstacle, maximum call distance without electromagnetic interference. In actual use, because the environment in which the user is located is different, the background noise is large and small, and the electromagnetic interference is strong and weak, so the actual call distance is generally less than 3 kilometers. Many users often mistakenly think that they can use it in the city when they buy a walkie-talkie. The call distance can reach 3 kilometers, which is unlikely! It is impossible for any manufacturer to predict the user's usage environment, and of course it is impossible to give the actual call distance.

Although the communication distance of the walkie-talkie is hard to say clearly, everyone is still very concerned about this issue. The phonetic communication is a professional radio walkie-talkie manufacturer engaged in the radio industry for 15 years, comprehensive customer feedback and its own test experience. Approximately the effective distance range of the walkie-talkie for your reference:

Handheld walkie talkie

7 watts of transmitting power: 2-4 km in urban areas and 4-7 km in open space;

5 watts / 4 watts of transmitting power: 1-3 kilometers in urban areas, 3-5 kilometers in open space;

3 watts / 2 watts of transmitting power: 500 meters to 2 kilometers in the urban area, 1-3 kilometers in open space;

1 watt / 0.5 watt transmission power: urban area 200 meters - 800 meters / open space 500 meters - 1.5 kilometers.

Car radio

50 watts / 40 watts of transmitting power: 5-15 km in urban areas and 10-25 km in open space;

25 watts / 20 watts of launch power: 3-10 km in the urban area and 5-15 km in open space;

10 watts/5 watts of launch power: 1-5 km in urban areas and 3-8 km in open space;

Short wave walkie talkie

The distance is very far, and the external environmental influence factors can support cross-provincial and even cross-border communication, but the short-wave intercom needs more than 3 amateur radio operation certificates, otherwise it is considered illegal.

Cluster walkie-talkie

The distance is very far, and it can basically communicate throughout the city. It is generally used in public security networks and requires high cluster networking costs.

Installation repeater

The cost of the repeater is relatively high, but the distance between the walkie-talkie and the walkie-talkie will increase significantly.