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What for PMR 446 #pmr446 #traveling #hiking #camping #walkway • Walkie Talkie 5Km Range Test - PMR446 0.5 ... Related link ( what is the ham radio) • What is the Amateur Radio? #hamradio PMR 446 stands for Private Mobile Radio 446. It is a set of radio frequencies that are designated for unlicensed, short-range communication in Europe. PMR 446 radios operate in the UHF (Ultra High Frequency) band, specifically between 446.00625 MHz and 446.19375 MHz. PMR 446 radios are commonly used for personal or business communication over short distances. They provide a convenient and cost-effective means of communication, especially in situations where mobile phone coverage may be limited or unreliable. PMR 446 radios are often used for outdoor activities, such as camping, hiking, or skiing, where groups need to stay in touch with each other. Some key features of PMR 446 radios include: License-free operation: Unlike certain other radio frequencies that require licenses, PMR 446 can be used without obtaining any special permission or license. Short-range communication: PMR 446 radios have a limited range, typically up to a few kilometers, depending on the terrain and environmental conditions. They are not intended for long-distance communication. Multiple channels: PMR 446 radios provide multiple channels (usually 8 or 16) that can be used to avoid interference from other users. It allows users to switch to a different channel if one is already in use. Voice-operated transmission (VOX): Many PMR 446 radios have a VOX feature that enables hands-free communication. With VOX, the radio detects when the user is speaking and automatically transmits the audio without the need to press a push-to-talk (PTT) button. Privacy codes: Some PMR 446 radios offer privacy codes or subchannels. These codes allow users to communicate privately within a group, as long as other radios are set to the same code. It's important to note that PMR 446 radios are specific to Europe, and their use and frequency allocation may vary in different regions of the world. Technology is the sum of techniques, skills, methods, and processes used in the production of goods or services or in the accomplishment of objectives, such as scientific investigation.