Popular Science | What is the difference between police walkie-talkies and ordinary walkie-talkies?

Talk about some characteristics and requirements of police walkie-talkies from two aspects: walkie-talkies and accessories.

With the development of society, the workload of the public security system has greatly increased than in the past. As an important part of the public security command and dispatch, communication has also put forward higher requirements. Under normal circumstances, when dealing with daily affairs, local police use walkie-talkies as the main communication tool. Since the public security system is a large user group, how to improve the performance of the walkie-talkie to meet the needs of the ever-developing public security work is also an issue that should be considered in the current walkie-talkie market.

Let's talk about some features and requirements of police walkie-talkies from two aspects: walkie-talkies and accessories.

Let me talk about the walkie-talkie first.

Leaving aside the frequency range and other characteristics, just talk about how the performance of the walkie-talkie can meet the needs of public security work. When it comes to the characteristics of walkie-talkies, people generally think that more functions are required. However, in practical applications, I find that many functions are rarely used, and only the intercom function is the most used. Therefore, I feel that police use walkie-talkies The primary feature is the reliability of communication, which means that the quality of the call and voice are the primary factors. On this basis, other performance requirements are also required.

1-Strong and durable. Due to the special nature of public security work, some accidents are often encountered, such as collisions, falls, etc., so whether the walkie-talkie is strong and durable is the first consideration.

2-Water resistance. Special police, traffic police and other departments, due to the particularity of their working environment, such as patrols in rainy weather, car inspections, and other work in severe weather or specific environments, such as rescue work in the water, all of which have high requirements for the waterproofness of the walkie-talkie .

3-Special requirements of fire department and other departments. The walkie-talkies of the fire department and other departments require explosion-proof resistance, high temperature resistance, waterproof, easy to carry, and do not occupy your hands. These are mainly related to the particularity of fire fighting. For example, the anti-explosion feature ensures that the machine can be used normally under the high temperature of the fire site; the waterproof is because the rescue work on the fire site will use a lot of water, which will inevitably make the walkie-talkie wet; and it is convenient to carry and does not occupy your hands because the firefighters themselves Carrying some fire fighting tools, the walkie-talkie is best worn with a special wearing clip, which is easy to operate, and the voice quality will not be affected by the complicated environment and location of the fire scene. Some brands of walkie-talkies design the screen to flip up and down to facilitate users to read in a specific environment. These improvements are more practical.

4-The size should be small. The particularity of the work of certain departments in the public security system requires the size of the walkie-talkie to be small and easy to conceal.

5-The operation should be convenient and easy, and the menu should be simple and clear. In fact, a powerful walkie-talkie has another weakness, that is, it is complicated to operate. In order to realize more function choices, it will inevitably lead to too many selection menus. In the time application of public security work, most of them use its intercom function. Of course, with the development of science and technology, there are now also data transmission requirements. However, in addition to many walkie-talkies, there are many additional functions. From the perspective of the author's personal knowledge of the use of walkie-talkies in the employment unit, a considerable part of the functions are of little significance, and there are fewer opportunities to use them. Caused a lot of misoperation. Therefore, I feel that the necessary functions of the walkie-talkie must be guaranteed, and the quality of these functions must be up to standard, and the operation must be simple and easy to learn and easy to use.

Secondly, talk about the requirements of walkie-talkie accessories.

The accessories of the walkie-talkie mainly include batteries, antennas, and chargers. Some larger brands will have more content in terms of accessories. I often come into contact with Motorola walkie-talkies at work, so I am familiar with their accessories. In addition to the aforementioned, their products include earphones, shoulder marks, battery clips, leather cases, etc. The earphones are divided into several categories according to the different trigger modes.

1-Let me talk about commonly used accessories such as batteries, antennas, and chargers. At this stage, for public security communications, the use of walkie-talkies is relatively common, and daily scheduling work is basically achieved through walkie-talkies. This requires that the walkie-talkies equipped by police officers not only have a clear call, but also have a long battery working time. On the other hand, due to the particularity of public security work, the walkie-talkie is required to be basically in working condition for 24 hours. Therefore, under normal circumstances, a spare battery is provided, which is usually fully charged. This brings about the problem of battery maintenance. A common phenomenon is that the spare battery is often not exhausted, but in order to ensure that it is fully charged the next time it is used, it has to continue charging. This method of use will affect the life of the battery. Nowadays, most of them are nickel-metal hydride or nickel-cadmium batteries, which have a memory effect, so the above-mentioned phenomenon in use will inevitably affect the battery capacity. This problem is often encountered in our daily work. Although this part of the battery can be recycled for discharge treatment, the effect is not too ideal (turn to page 54). The author feels that this should be a more critical problem, and battery manufacturers should come up with a solution to this problem.

Let's talk about the antenna again. The common phenomenon is that the outer rubber surface is not resistant to aging, breaks, and has poor compatibility with the walkie-talkie interface and is not easy to screw in. Another situation is that the core wire of the antenna is broken, causing the walkie-talkie to fail to receive and transmit signals.

As for the charger, there are not many quality problems. In use, I found that some manufacturers’ chargers are not clear about the charging completion status. For example, charging and charging are completed using the same red light, so that users can’t distinguish what is a charged battery and what is charging. Battery.

2-In terms of earphones, shoulder marks, battery clips, etc., due to the particularity of the environment and method of use of police walkie-talkies, there is a greater demand for these accessories. Taking the headset as an example, there are several triggering methods to adapt to different working environments of users. The problem with the earphone is mainly in the earphone cable, and there are more breakages, so this is a more prominent problem. There are several types of shoulder marks according to different machine models. Wearing the shoulder marks can facilitate the police officers to carry the walkie-talkie. There is no need to occupy one hand to hold the machine, just wear the machine around the waist. The shoulder marks that I have come into contact with are all Motorola products, and I feel that there are not many problems in use. Therefore, the quality of these accessories is directly related to the use of walkie-talkies.

In summary, high-quality accessories are also a key factor for the use of walkie-talkies, especially police walkie-talkies. According to the author's personal observation, most of the problems in accessories are focused on the selection of raw materials, and there are not too many problems in design.