Amateur radio frequencies are allocated by the national telecommunication authorities. Each frequency differs in each location in every country depending on its bandlength. Frequencies in each city differ but some frequencies can reach multiple locations if it is strong enough. However, the International Telecommunication Union is the primary authority that manages the radio spectrum. This include...
How far can dual band radios communicate, 30 km? This is one of the most common questions asked by newcomers, but they often do not get a satisfactory answer. This is a complex question that requires a number of factors to be considered. Obstacles are a very important factor in communication distance. In the city, two handheld radios may only be able to talk for 1-2 km, whereas in open areas, they...
Radio beginners often ask questions about CTCSS (Continuous Tone Controlled Squelch System) , thinking that they are vague and difficult to grasp. So today we will talk about what CTCSS is. CTCSS is a technology that adds frequencies lower than the audio frequency (67Hz-254.1Hz) to the audio signal and transmits it together. The purpose is to check whether the signal is legal and whether to respon...
The wattage of walkie-talkie refers to the transmit power, and the unit of measurement is watts. The stronger the signal transmit , the further the call distance. The following is the difference between the transmission power of the handheld radio and the base radio. 1.handheld walkie-talkie 7W transmit power: 2-4 kilometers in urban areas, 4-7 kilometers in open spaces; 5W/4W transmit power: 1-3 ...
National Day holiday is a good time to travel. While relaxing your mood, we reminds all travel experts, please bring your communication equipment-- walkie-talkie when you go out to travel. Whether it is domestic travel or overseas travel, there are also many travel safety incidents resulting from this, and cases of tour pal who have lost contact and gone abroad frequently occur. During the Nationa...
Radio amateur who have used walkie-talkies know that programming is a necessary skill for the correct use of walkie-talkies. For users who have just started walkie-talkies, they do not know much about this field, and they will mistakenly think that all newly bought walkie-talkies must regulate frequency. In fact, this is a misunderstanding. We all know that most walkie-talkies have pre-written fre...
DMR radio is one of the many types of walkie-talkies that have been recognized and favored by many users in recent years. What is the difference between DMR radio and analog walkie-talkie? Let's talk about this topic this time. What is DMR? DMR stands for Digital Mobile Radio and is an international standard that has been defined for two-way radios. The European Telecommunications Standards Instit...
Radio equipment such as walkie-talkies is a necessary communication tool for outdoors, but in use, many people do not know how to comply with radio management regulations, and the phenomenon of setting frequencies without knowing the law is serious. The editor collects commonly used frequency tables on the Internet. Please use them according to law. 1.Professional walkie-talkie: Vhf ban...
