The farthest distance of walkie-talkie
1, handheld walkie-talkie:
Intercom with transmission power of 5W/4W: urban area 1-3km, and open barrier-free area 3-5 km;
Walkie-talkie with transmission power of 3W/3W: 500m-2km in urban area and1-3 km in open area;
Intercom with transmission power of 1W/0.5W: 200m-800m in urban area and 500m- 1.5km in open area.
(The state stipulates that the maximum power of hand table is 5W, but there are many machines with 8W, 10W standard on the market at present, which are generally empty. )
2. Car intercom:
Vehicle platform with launch power of 50 W /40 W: 5- 15 km in urban area and10-25 km in open area;
Vehicle platform with launch power of 50 W /40 W: 3- 10 km in urban area and 5-15 km in open area;
Vehicle platform with emission power of 50W/40W: urban area 1-5km, and open area 3-8km.
3. Short-wave intercom: His communication distance is far away. If the external environment permits, this walkie-talkie can communicate nationwide or even globally. But the users of this walkie-talkie need a professional license.
4. Intercom used with relay station: Intercom used with relay station can effectively increase communication distance. Generally, after adding relay stations, the communication distance can reach as far as 30 kilometers.
5-card walkie-talkie: This kind of walkie-talkie is similar to our mobile phone, and it needs to use SIM and the mobile base station of the telecom company. Since it is necessary to use mobile base stations and mobile traffic, of course, this walkie-talkie also needs a certain traffic fee. This walkie-talkie can be used for national or global intercom. GSM/WCDMA network is generally used for national intercom, while WCDMA network can only be used for global intercom.
So the communication distance of walkie-talkie depends on the nature of our walkie-talkie. In addition, when using the same walkie-talkie, they will also be affected by the environment, such as weather and obstacles.