Vertex licence-free two way radios also known as PMR446 radios are manufactured with the frequencies already programmed in. You can use licence-free radios for either business or personal on the pre-programmed UHF frequencies, both in the UK and across the European Union. These radios are usually operate on a lower power with am maximum power of 0.5 watts. This can result in a much shorter range but really depends on the surrounding terrain eg. built up areas or use in large buildings will produce a shorter range but will have a much larger range if used in open terrain.