Professional radio refers to the transmission power of the two way radio greater than 4W, the most common professional radio on the market at present has the transmission power of 4W and 5W. The actual call distance of this kind of two way radio is generally about 7 kilometers, which mainly meets the application that requires a longer call distance, such as public security, security and large community management. The price of such radios is higher, generally around 1500 to 2000.
Civil radio refers to the transmission power is not greater than 0.5W of the radio, the actual communication distance of this kind of walkie-talkie is generally about 1.5 kilometers, mainly to meet the requirements of the communication distance is not strict applications, such as restaurants, small parties, exhibitions, travel and so on. The price of such radios is low, generally between 240 and 500.
There is also a class of two way radios between professional and civil radio, their transmission power is about 2W to 3W, the actual call distance is about 4 kilometers. This kind of two way radio mainly meets the users who have certain requirements for the communication distance, but the price of the radio is not too high. Because in actual use, many travel enthusiasts finally feel that the call distance of 0.5W radio is relatively close, which cannot meet the slightly distant application, if you buy a professional radio, although it can be used, it has to bear a higher cost, and it is rarely used so far. Or the best choice is a 2W radio.
After having a basic understanding of the outdoor radio, it will be more convenient for everyone to buy and operate in the later period. Then about the specific purchase of outdoor two way radios need to pay attention to things, we will continue to explain in the next chapter.
1. Two way radio power supply Currently commonly used two way radio power supply are: lithium rechargeable battery, nickel metal hydride rechargeable battery, AA alkali battery. Generally can not be charged in the field, so the standby time and talking time of the two way radio is a more important parameter, otherwise it is often a problem due to the lack of power of the two way radio when it is most needed for communication. In general, lithium, nickel-metal hydride for the power of the two way radio is relatively large, but the backup battery is a big problem; The power of a two way radio powered by an alkali battery is generally less than 2W.
2. Communication frequency, Communication Frequency and radio communication are as closely related as roads and cars. There are two main sources of common radios: those brought back from abroad; Civil radios purchased by regular domestic shops. Although they are all in the UHF for communication, but because of the domestic radio band management regulations and international standards are different, the communication frequency of these two types of two way radios are also very different.
Maybe now you're thinking about buying a handheld radio. Handheld radio can change the transmission frequency, has a complex scanning function, and the transmission power is large, but there is one thing that is its weakness: it is not easy to operate. The biggest advantage of handheld radio is that it is easy to operate, and professional radios often have simpler panels and can be learned to operate in 5 minutes. Due to the poor field conditions, the waterproof and shock-proof function of the radio is best to be considered, it is still very practical for travel lovers. After all, in the wildland we have to spend as much time as possible taking care of ourselves and without impurities.
3. Power and distance In the case of straight line without obstacles, the power of the two way radio is basically proportional to the communication distance. The communication distance promised by 0.5W radios is generally about 3 kilometers, and the 2W radios are 9-10 kilometers (this distance will be shorten in the valley). High power will bring a large power consumption problem, so it is best to consider the situation you may encounter and the expected communication distance.
And please attention if it is a small army of about 5 people, then use 0.5W radio; If it is more than 10 large groups, or groups composed of multiple groups, then you can use 2W radio and 0.5W radio at the same time, under normal circumstances, a group of 4-5 people is very much, such a configuration is considered more comprehensive, between the teams with 2W radio, the use of 0.5W radio within the group, This is convenient and battery save (as already said, the greater the power consumption, the greater the 2W radio does not need to be used often, as long as every once in a while to communicate between the teams on the line).
