Kuangtong walkie talkie

1. There are many procts that can do it. Take bd500 walkie talkie as an example, by customizing the communication mole and antenna, bd500 has stronger signal penetration and can still present clear voice when the same frequency signal interferes; Cooperate with the 5W / 4W transmitting power of the hand table to ensure good signal receiving and transmitting effect
in addition, there are flammable and explosive gas or st environment in the mine, a little spark or energy will cause explosion, in these environments, special explosion-proof equipment is needed to ensure safe operation
with the mission of ensuring the safety of users, based on years of continuous and in-depth research in the field of explosion-proof, a series of intrinsically safe explosion-proof walkie talkies have been launched, and continuous technological innovation has been carried out to achieve the ultimate explosion-proof performance. Explosion proof family procts have passed a number of certification, including IECEx, ATEX, FM, CSA, CQST, ul913, tia-4950, etc., which meet the use requirements in flammable and explosive gas and st environment, and escort the safe proction and operation.

2. Generally, the walkie talkie used under the mine is wired, and can't use wireless, because a kind of explosive gas will be proced under the mine. If you use wireless walkie talkie, it may cause explosion ~!

3. Beifeng interphone

4. Considerations for choosing walkie talkie
frequency range

Professional walkie talkie: equipped with professional frequency writing software, The frequency can be changed / increased / decreased according to the actual needs of customers.
134-174mhz 400-470MHz 350-390mhz police band
134-160 MHz 148-174mhz 400-430mhz 450-490mhz
call distance
Professional walkie talkie: 3-5km
Civil walkie talkie: about 1km
appearance volume
Professional walkie talkie: color is generally black
Civil walkie talkie: about 1km Use walkie talkie: mostly color
use environment
professional machine: factory, coal mine, property, petroleum, chemical instry, airport, station, aviation, kindergarten, hotel, gas station, shopping mall, office building, supermarket, logistics, hospital and other medical institutions, cinema, museum, exhibition hall, science and Technology Museum, art museum
civil machine: small shopping mall, small supermarket Small scale kindergarten, small open space
frequency writing
Professional walkie talkie: professional walkie talkie is equipped with professional frequency writing software and frequency writer [one end of the frequency writer is connected to the computer, the other end is connected to the walkie talkie, and the frequency can be written according to their own needs
Civil walkie talkie: the frequency point of civil walkie talkie is built-in and cannot be changed, It is also not allowed to increase or decrease (generally, 20 frequency points are built in the factory)
general distribution of Wuhan sunchi communication walkie talkie in Central China

5. Explosion proof walkie talkies should be used in coal mines. Imported brands such as Motorola's GP328, 338, etc. have a price of more than 2000 yuan. There are few domestic brands in this aspect, so it's hard to say the explosion-proof performance
the use of underground wireless walkie talkie is quite limited. It will be very difficult for you to directly contact underground and on the well, and it will also be very difficult for you to contact each other underground. You need to use the wired relay system to fully cover the working face and roadway.

6. Explosion proof..

7. Hytera hp780 digital explosion-proof machine is an intrinsically safe explosion-proof terminal specially designed for energy, petrochemical, mining, fire emergency, airport and other instries. Hytera hp780 explosion-proof machine is designed in strict accordance with China's latest explosion-proof electrical standard (2010 version), with high protection level and high capacity battery configuration, providing more safe and reliable communication guarantee for workers in dangerous environment containing explosive gas and combustible st. Lightweight and portable, with eye-catching buttons, it is very suitable for use in places with weak light.

8. I think it should be possible. Because radio communication is used in space, it should be able to be used on earth. However, we should pay attention to the emission of combustible gas underground, otherwise a little spark may cause great disaster.

9.

The way to improve combat effectiveness is as follows:

1: Brush elite every day, brush every day, and then strengthen weapons, armor, jewelry, helmets

2: Brush nightmares every day. Yang Jian's gem recommends attack, critical hit, dodge and luck. At present, this gem has the highest combat effectiveness, Legend quality will increase)

3: Nine layer xuanta is brushed every day, the third layer can be brushed, but the second layer can also be brushed. At present, the second-order Liangyi umbrella with the highest combat power is recommended to get full level first

3: advanced weapons, advanced helmets, advanced armor, as you all know.

4: arena is brushed every day, Because there are a lot of needed props

5: Ten halls of Yama, refining pills, upgrading mental arts

6: black market stores, you may have free gems every day

7: Mystery stores, you can quickly get materials

8: wash weapons, armor, jewelry, try to get the best, brush copies every day, This is the common people's way

(the above is the daily life of our common people. If we don't worry every day, rookies will become gods one day)

[6W goal achievement]

10. You sell things, get on the shelves, and be bought by people. The money is in the market. You have to spend 24 hours (24 hours, wow, forget how long, it seems like 24 hours ~) of the buffer period before you mention the money to your Alipay.