PMR446 (Private Mobile Radio, 446 MHz)'s a part of the UHF radio frequency range that's open without licensing for personal usage in most countries of the European Union. It's roughly the same use as FRS or GMRS in the United States and Canada. Depending on surrounding terrain range can vary from a few hundred metres (in a city) to a few kilometres (flat countryside). PMR446's primarily used in consumer-grade walkie-talkies similar to those used for FRS/GMRS in the United States and Canada. Hist… (More on Pmr446)