using GIS to plan radio networks

Hi,
You have hit a very popular question. There are several way's to address this. The method used needs to be based on the type of radio network you wish to deploy. For example, when one of my partners wanted to put together a bid on deployment ofWIFI in a metro area he did it the low cost way. Using Map Point and the SDK he was able to drill down to street level, and with the SDK added a grid overlay to the street level map. Once he had this the next step was to create a circle in size representing the transmission distance from the access point less 15% to insure coverage. The only other aspect that needs to be identified is structures that could block transmission and plan around them. Map Point allows for text tags to identify these.
Hope this helps,
Steve