Attached ForeFlight KML files for ONMNR UTM Grid System, FM Radio Network, and Waypoints.
Due to the size of the grid system, files had to be split up to the various UTM zones otherwise ForeFlight would reject the files due to the size.
I also updated due to popular demands the UTM For Flight iPhone/iPad app to support conversions to/from OMNR UTM grid, to Lat/Lon and display real-time current coordinates in ONMNR format. See screenshot below.
OMNR FM Radio.kml
OMNR Grid 15.kml
OMNR Grid 16.kml
OMNR Grid 17.kml
OMNR Grid 18.kml