Mexico and world FM coverage, RFI for low-frequency experiments.
- fmMEXcoveragebyPower.png FM coverage for Mexico using IFL and INEGI information, coverage zone defined by power and frequency of stations.
- fmCoverageByPower.png FM coverage using fmlist.com information, defined by power and frequnecy of the stations.
- fmCoverageByDistance.png FM coverage using fmlist.com information, coverage zones are for 10, 50, 100 and 150 km.
- The maps overestimate the coverage of FM, good observing sites may exist due:
- Mountains attenuations are not calculated (round Earth is supposed).
- Isotropic antenna is supposed.
- Where is the world-wide information? fmlist.org offers free information for personal and no-commercial, with the restriction of not sharing the information. You can get the information from their site.
- Then, why Mexico information is provided? IFT (Federal Telecommunications Institute) and INEGI (National Institute of Statistics and Geography) are two Mexican institutions that publish broadcast statins data under licenses enabling the share of them.
- fmlist data is a crowd-sourced effort and the information is incomplete and for some entries, not properely fill (some stations are listed on sub-watt power while other on the M-watt range. Therefore the world-wide map coverage calculated by power reflects a unrealistic map.
- Jose M Jauregui-Garcia
- Edgar Castillo-Dominguez