25
2023
-
04
How to distinguish the advantages and disadvantages of walkie talkie
Author:
In response to this problem, Henan Baolan Xiaobian summarized some methods on how to distinguish the advantages and disadvantages of walkie-talkies, hoping to be helpful to everyone.
1. power size
power is an important factor affecting the theoretical call distance of the walkie-talkie, so many users will give priority to the power of the walkie-talkie. According to the current regulations of the domestic radio management committee, the maximum power of the hand-held walkie-talkie is 5W. But we must understand that "theoretical call distance cannot be used as practical application distance". If there is a long-distance call demand, as far as possible is to install a turntable tool.
2. Frequency Band Rule
According to the rules of the China Radio Regulatory Commission, in the daily use of walkie-talkies, the frequencies of walkie-talkies are divided as follows according to their application fields: professional walkie-talkies: V section 136-174MHZ,U section 400-470MHZ; Amateur use: 433MHZ; For armed police: 350MHZ; Coastal: 220MHZ, etc.
Under normal circumstances, the communication distance and quality of the wireless walkie-talkie in the plain are better. There are tall and dense buildings in the urban area, and there are many traffic and noise, which will seriously affect the signal quality of the low frequency band; and in the suburbs and rural areas where the terrain is relatively empty, the propagation distance of the walkie-talkie is more ideal.
3. Battery Properties
Most of the walkie-talkie batteries are lithium batteries or nickel-metal hydride batteries. Compared with nickel-metal hydride batteries, lithium batteries are not only light in quality, but also have longer battery life. Users can choose according to their own situation, the general lithium battery can be used for 2-5 days, and poor quality walkie-talkie battery power consumption will be significantly faster.
4. product details
1, look at the process and materials: the gap between the body and the battery is not big, whether the shell will sound if you pinch it hard, whether the color of the shell is bright, the material and hand feeling of the keys and knobs, the materials used in the hidden place, etc., the advantages and disadvantages of the machine can be seen from these details.
2, test sound quality: see if you can hear the original sound. if the sound is distorted during close calls, it means that the technical level is not enough.
3, robustness test: some walkie-talkies say that they are resistant to pressure and fall. if conditions permit, they may as well do a test on site.
5. Industry Attributes
Clear the nature of the industry using walkie-talkies, with the aim of finding more suitable walkie-talkies equipment and avoiding poor communication results due to common sense problems.
Professional walkie-talkies are suitable for security, wedding, construction sites, factories, shopping malls, public security or other temporary dispatching, etc. Civil walkie-talkies are only 0.5W, which can basically meet the needs of general entertainment and leisure places. Explosion-proof walkie-talkies are used in hazardous gas environments such as gasoline depots, ammunition depots and coal mines after restructuring.
6. Channel Range
Generally, there are 16 or more professional channels. If you are an amateur, try to buy intercom equipment with keyboard type, because you can adjust the channel transmission and reception frequency at any time, making the intercom more playable.
For many novice radio players who are just getting started, identifying the quality of a walkie-talkie often requires sufficient accumulation of professional knowledge. For ordinary consumers, you can also refer to the following simple and easy methods:
1. Check whether the walkie-talkie has a model approval certificate. If it is not, it is generally produced by small factories and belongs to three-no products. It is not allowed to be sold, and the quality and indicators are usually not up to standard.
2. Carefully check whether the instructions, warranty cards and certificates in the walkie-talkie package are complete. If the walkie-talkie manufacturer does not even have these standard random accessories, it is very likely to be unqualified products.