Summary of common faults and correct use methods for daily use of wireless walkie-talkies

In recent years, the use rate of wireless walkie-talkies in various industries in China has been continuously improved. Public security, armed police, forest and other professional users, construction sites, property, security, and civilian amateurs have become more and more widely used. Summarize some of the most common faults and correct usage methods in daily use for a brief introduction for walkie-talkie users.

Antenna: The antenna is the most important component of the whole machine. If the antenna fails or is bad, it will affect the communication effect. In the user's use, the antenna is often used to drive the whole walkie-talkie, and the more serious is to pinch the walkie-talkie at the tail of the antenna. Since the antenna port is the entrance and exit of the high-frequency receiving and transmitting of the whole machine, the professional TNC, BNC, SMA and other interfaces are often used. At this time, due to the mechanical strength of the antenna itself, the antenna sheath is peeled off, the antenna pin is broken, or the antenna pin is contacted for a long time. The surface becomes smaller, and in severe cases, the joint between the antenna pin and the circuit board is de-soldered. At this time, the standing wave of the machine has become larger. In the case of continuous operation, some machines with poor protection measures will cause failures such as power tube, power amplifier module burning or power resistance burning, and the user will generally not accept the words. In case of repairs. It is recommended to pay attention to the correct use method when using it. Check whether the connection between the antenna and the antenna base is reliable, whether it is black or dirty, and whether the appearance of the antenna is damaged. If it is damaged, it is recommended to replace the same type antenna and antenna base.

Battery: The battery is the source of energy for the whole machine. Since the current is large when the walkie-talkie is launched, the disposable alkaline battery is used less. Most wireless walkie-talkies use rechargeable nickel-cadmium, nickel-metal hydride, or lithium-ion batteries. Frequently, users have suggested that the battery life is not long enough. Just after charging (PTT), there is no power in a few times. Except for some operators who use inferior batteries and affect normal use, the correct way to use is to extend the battery. Use time and service life. Investigate and ask the user to find that some users will charge it in the charger for a period of time when they want to use it, and use it when they are used, without regular charging and discharging. Since the charging and discharging of the nickel-cadmium battery has a memory characteristic, there is a phenomenon of insufficient filling. There are also some users who do not use it for a long time to put the battery on the charging stand for a long time. It should be known that many simple chargers on the market are not full of prompts and protection circuits, so that the battery will be overcharged for a long time, and the battery will be scrapped when it is serious. Users who use lithium-ion batteries are generally equipped with a professional lithium battery charger, but it is recommended that users refill each battery cycle. Although lithium has no memory characteristics, the capacity will drop greatly after two to three hundred charge and discharge cycles.

In addition, some machines are leaking due to different environments, or battery quality problems, and the machine and battery contacts may oxidize and corrode. The battery is in poor contact with the machine, and it will not turn on when it is serious. This phenomenon can generally be seen from the surface, the light can be scraped clean with a blade, the recommended battery is scrapped, and the machine is repaired.

PTT (transmit button): The launch button is the component that is used most frequently in daily use. In some machines that are sent for repair, it is found that some of the machines are aging or damaged by the launching key, which affects normal use. Some affect the buttons on the circuit board, there are faults such as poor button contact, button failure, etc. It is best to use the same type of device as the original machine for maintenance.