Secondly, generally speaking, radio stations currently purchased basically refer to radio stations with frequencies in the U-band (400 MHz to 470 MHz). This frequency band is used worldwide by amateur radio enthusiasts, and the transmitting antenna is not very long. Easy to carry or install. The other frequency segment is the V segment, which is around 144 MHz, but due to the relatively long antenna, it is not suitable for vehicle radio stations.
In general, for those who often drive, basically choose a car radio station, commonly known as the car station, its advantages are high transmission power, generally more than 20W; easy access to electricity, directly connected to the car's power supply; simple operation, general Make a channel type, each channel is preset with a fixed frequency value;
For those without a car, people who don't often drive (refer to those who don't always stay in the car) are also good choices for handheld radios. It is characterized by its small size and portability, that is, it can be used in the car, and it can also be carried around, for example, liaising with other people while hiking. Another advantage of a handheld station is that its functions are generally stronger than those of on-board radios. For example, its receiving frequency range can range from 0.5 MHz to 999 MHz or more, and the frequency range of car radio stations is basically very narrow. For example, we have The johnson platform currently used has a frequency range of 430MHz to 440MHz.
Everything has two sides, there are advantages and disadvantages. The disadvantage of the vehicle platform is the advantage of the walkie-talkie, and the advantage of the walkie-talkie is naturally the shortcoming of the vehicle platform. Of course, there are tables and tables that are better, but they cost more.
If you only want to use it to communicate with each other when the team is traveling, and to communicate when you go in and out, you usually use a walkie-talkie. If you are in the car and you want to connect with people who are far away, then Only the vehicle platform can be used because of its high transmitting power, and the performance of the antenna (receiving sensitivity, emission efficiency) is better than that of a handheld radio station.
Because the transmission station's transmission power is large, then if you say it, people can hear it within a very large range, and it becomes a broadcast. This is not suitable for some personal words. Of course, you can buy that kind of adjustable. Launched power station.
The advantage of hand-held radios is that they are convenient to carry. Last week we went to the Shirakawa Gorge. Each car uses the Yaesu VX-1R intercom, and the launch power of 0.1W is sufficient for the team's contact. The words spoken will not be heard by others. It's easy to talk about more private topics. When you go uphill, you can bring your walkie-talkie to you. People with different climbing speeds can also chat at the same time.
The intercom can also use the antenna of the car station in the car, and the effect is much better than directly using the rubber antenna that it owns. Therefore, it is dual-purpose. It can be used as a low-power platform in the car, and it can also carry with you. use.
It is said that some people have a car seat and a walkie-talkie. When accompanying the leader to go shopping, the leader takes the walkie-talkie to go shopping. He sleeps in the car until he hears a voice from the leader asking him to pay for it. He wakes up. .
The above is just a brief description of the choice of radio station. According to different people's requirements, it is better to find a relatively clear person to do some staffing before purchasing, and may choose the radio station that suits you.
Radio is a magical thing. If you go in, it will fascinate you. At the same time, its technicality is also very strong, and it is also difficult to learn through well.
It is important that frequency resources belong to the country. Equipment that uses transmission power such as radio stations must pass the consent of the relevant state agencies and must not use such equipment privately. Offenders may be subject to relatively heavy criminal penalties. It is recalled that before the Cultural Revolution ended, it was possible for a privately-owned radio station to be convicted of a counter-revolutionary crime. The law now stipulates that it is a crime to call a private station. For hobbyists, they must first apply to the relevant departments, get the appropriate approval, before they can radio set up Taiwan, communications and other activities, while activities should comply with relevant laws and regulations.
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