Coverage is reliant on power, antenna height and terrain. On-site portable radios will typically cover from 1-3 miles in radius, while wide-area radios can offer coverage up to a 30 mile radius from the repeater site. Due to the characteristics of radio waves, UHF radios generally offer better building penetration and therefore are ideally suited for indoors as well as for areas of high building density (cities). VHF radios are better suited for areas where there is vegetation, where the signal can pass through objects. For this reason VHF radios are ideal for outdoor use. Where the application requires a combination of indoor and outdoor use, a UHF radio is preferable. Your account manager will know by your specific application which radio will best fit your needs.