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Ham radio grid squares map11/8/2023 ![]() ![]() Ogr2ogr -f KML EN-maidenhead_grid.kml EN-maidenhead_grid.shp Let’s assume we want to make the grid square ‘EN’. You’ll need the OGR toolkit installed, which comes in several open-source geo software bundles: FWTools/ osgeo4w/ QGis. Several people have asked, so here’s how you convert to KML. If anyone would like their grid square in Google Earth format, let me know, or read on … Making KML Files ![]() (If you’re feeling nerdy, here it is in Shapefile format: Maidenhead_Locator_World_Grid-shp). A Google Earth KML file covering the whole world in 20° by 10° grid fields: Maidenhead_Locator_World_Grid.324 (= 18 2) of these files would cover the whole world, and at 8MB or so a pop, things get unwieldy quickly. ![]() You’ll need Geo::Shapelib to make this work.
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