We have never come into contact with this item before. We have only seen it in film and television works, and its function seems to only exist in connection.
I can’t help but wonder, if you already have a mobile phone, why do you need a walkie-talkie?
This has to mention the characteristics of walkie-talkies.
It is a two-way mobile communication tool that enables calls within the transmission range without any network support.
The call cost is low, and it can be used as long as the battery is kept, without additional call charges.
One-to-many, one walkie-talkie can talk to all walkie-talkies as long as they are on the same channel.
In an emergency, a mobile phone call requires waiting for the other party to connect, but an intercom can allow both parties to talk as soon as the call button is pressed, reducing the time for connection.
Therefore, the method of using walkie-talkies for communication will still be retained in some park operations, construction site operations, factory workshops, supermarkets, hotels and other occasions.
So how to choose a walkie-talkie?
There are actually many categories of walkie-talkies, and the more common ones can be divided into 6 categories.
1. Professional intercom.
The transmit power is 4-5W, the frequency range is 136-174MHz or 400-480MHz, and the call distance is relatively long, generally up to 3-8 kilometers.
Easy to operate There are only two knobs to control the number of channels and the power and volume switches.
It is larger and bulkier, but its performance is more outstanding and stable in terms of waterproof, shock resistance, fall resistance, and anti-aging.
The price is relatively high, and it is generally used in construction projects, property management, and factory workshops.
2. Commercial walkie-talkie.
The transmitting power is 0.5-4W, the frequency range is 400-480MHZ, and the calling distance is between 800 meters and 8 kilometers.
It is lighter and more beautiful than professional walkie-talkies. It can be tied around the waist through the belt clip of the walkie-talkie, freeing your hands.
The price is similar to professional walkie-talkies, and they are generally used in shopping malls, retail industries, etc.
3. Civilian walkie-talkie.
The transmit power is 0.5W and not more than 1W, the frequency range is between 409MHz, and the call distance in the open area is generally about 3 kilometers.
Small size, low price
It will be used in families, such as camping trips, etc. It can be used for communication, or for parent-child interaction in games, etc.
4. Explosion-proof intercom.
That is, a functional walkie-talkie.
Technically, the route of the explosion-proof walkie-talkie has been specially processed to shield the places where sparks can be generated during the communication conversion process.
It can be used in various special occasions including coal mines, liquefied gas tanking companies, oil depots, oil fields, gas stations, mines, natural gas, chemical plants, flour processing plants, etc.
5. Railway intercom.
The transmitting power is 4-5W, and the frequency range is 440-470MHZ.
It is a special intercom equipment tailored according to the actual work needs of the railway department.
Generally, there will be a lot of noise when the train is running, and the audio output requirements for the intercom will increase. Through voice companding, the call quality has been improved.
6. Car intercom.
The main thing to consider is a voltage issue.
Generally, the current voltage of walkie-talkies is 12.5V, and the voltage of automobiles is 12V to 24V, which is applicable.
But if the car walkie-talkie wants to work in a car with a voltage of 24V, it will need the assistance of a transformer.
The transmitting power of vehicle-mounted walkie-talkies is generally 24-50W, and the signal is transmitted far away, so it is widely used in fleets.
Combined with the above classification of walkie-talkies, we generally need to look at four aspects when making actual selections.
① Power and communication distance; ② Battery durability; ③ Applicable occasions; ④ Size and weight.
For others, you can look at YATEGOOD and choose the one that meets your usage conditions.