What is the difference in communication distance between different wattage walkie-talkies?

 Low Power Walkie Talkie (0.5W - 1W)

  Taking 0.5W walkie-talkie as an example, under the ideal condition, i.e. no obstacles around and no electromagnetic interference, its communication distance can reach about 1.5 kilometers. However, in the real world, such an ideal environment is extremely rare. In ordinary urban environments, high-rise buildings, vehicles and a variety of electronic equipment generated by electromagnetic interference, will seriously impede the signal propagation, so that the actual communication distance is often only maintained between 200 meters - 800 meters. For example, in densely populated, scattered buildings in the old city, 0.5W walkie-talkie effective communication range may be only two or three hundred meters. The 1W power walkie-talkie performance is slightly better, in urban environments, the communication distance can be raised to 500 meters - 1 kilometer or so, open areas can reach 1 - 2 kilometers. Such low-power radios, usually because of the compact size, easy to carry, and affordable, in some of the communication distance requirements are not high occasions are highly favored.

  Medium Power Walkie Talkie (2W - 3W)

  When the power of the walkie-talkie is increased to 2W - 3W, the communication ability has been significantly enhanced. In urban environments, the communication range is typically 1 - 3 kilometers. For example, in a shopping mall, from one end of the mall to the other, a 2W - 3W walkie-talkie can basically ensure a clear and stable conversation. In the relatively open, less obstacles in the open area, the communication distance can be further expanded to 3 - 5 kilometers. Like some large outdoor activities, the staff use 2W - 3W power walkie-talkie, you can maintain smooth communication in all areas of the venue. This kind of medium power walkie-talkie, balanced with a certain communication distance and portability, in the business, service and other fields of application.

  High Power Walkie Talkies (4W - 5W)

  4W - 5W power radios are a step up in performance. In urban environments, their communication range can reach 2 - 5 kilometers. In some large-scale construction sites, the distance between various construction areas is relatively long, using 4W - 5W walkie-talkies, construction personnel can communicate in a timely manner the progress of the project and coordinate work arrangements. In the open countryside, field and other environments, high-power radios are showing strong advantages, communication distance up to 8 - 10 kilometers. For example, in the self-driving caravan across the grassland, the use of 5W power walkie-talkie, even if the front and rear vehicles are separated by several kilometers, but also can easily communicate road conditions, share the journey. Due to its excellent communication performance, high-power walkie-talkie plays an important role in professional fields, such as outdoor adventure, large-scale events and so on.

  Specialized radios (Mobile Radio)

   The power of mobile radio is usually between 25W - 50W, with strong power support, in the urban environment, the communication distance can reach 5 - 15 kilometers, open space is able to reach 10 - 25 kilometers. In the city bus scheduling system, the car radios can ensure that the bus vehicles in all corners of the city can maintain close contact with the dispatch center. Repeaters are not directly used for communication, but their role should not be underestimated. By setting up a repeater, the communication distance between handheld radios and vehicle radios can be greatly improved. For example, in mountainous areas where signals are easily blocked, the original communication distance is limited to handheld radios, with the help of repeaters, effective communication can be realized over ten kilometers or even longer distances.