Service area estimate for the POCSAG pilot system

I downloaded few hours ago the wonderful Radio Mobile -software which is a freeware prediction software to do coverage area plotting etc, with the assist of topographic map data available. I decided to give it a try with the POCSAG paging transmitter. Everything else I had solved out to create the map, but the manufacturer detail of 5.7 uV/m signal strengh requirement for paging reception was quite hard to punch in, in another format, of course..

The map shows quite accurately the locations as coverage area (green), where we have  received paging transmissions successfully. I still propably would'nt actually trust 100% this software, as the topographic material lacks all urban buildings, houses etc. The topographic data for Finland is available only in 3 arc second resolution, which is about 100m in landscape resolution respectively..