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GOM - Screen Shots
Home > Overlay Maps > GOM > Screen Shots
� This page shows some screen-shots of the Global Overlay Mapper.

Some screenshots of the Global Overlay Mapper in action. Click a small image to show the full sized image in a new browser-tab. Note that the quality of the .jpg images are not as good as the standard GOM screen, due to format-coding limitations of the .jpg standard.

The opening view of the Global Overlay Mapper. The version numbers and license information are clearly shown. Above is the main toolbar, used to select all of the Global Overlay Mapper's maps and functions.
A map is opened by clicking on the GOM main toolbar - here we are looking at a sub-continental map of Eastern USA. Next, the gray toolbar over the map is used to select the required overlays to view: in this case it's CQ Zones and Cities.
The order in which the overlays are stacked depends on the order in which they are turned on. The top-most overlay, turned on last, is indicated by the overlay-button with white lettering. Currently, the Grid Locator is on top.
A view of the Country overlay, with the Prefix overlay above it. Note how the administration area borders are seen below the prefix borders; this is useful in understanding the prefix area composition.
No background overlays are visible now; but the Latitude/Longitude grid clearly divides the map on view. The current cursor position is also shown in the Status Bar, to the bottom of the map, along with the Grid Locator value, and the distance/bearing from the location entered in your 'User Details'.
Three overlays are visible here: CQ Zones, Country & Admin Area Names, and IOTA Reference Numbers. Note how one overlay does not mask another. Data is, as far as possible, given unique locations, for a clear and uncluttered map view; something not possible in most other Ham Map programs.
A view of South America, showing parts of Argentina, Brazil, Paraguay, and Uruguay. The prefix maps in the Global Overlay Mapper are believed to be the most comprehensive currently available in any mapping package, and are fully updated with the latest values.
Here, the 'Grid Locator' overlay has been turned on above the 'Country' overlay; an easy way of visualising the areas covered by the Grid Locator system. Note how the current position of the cursor is also identified on the Status Bar below, as 'GI19aa'.
Finding and identifying a Grid Locator position has never been easier. The 'Find' window has been opened, and 'GI19aa' entered in the relevant box. Clicking 'Go' will plot position and name on the correct map. Change maps, and the marker remains, until you wish to delete it.
This view shows some of the many country, state, and province flags included with the Global Overlay Mapper. This flag-set, which covers every DXCC entity, US and Australian state, and Canadian province, is also available in a pack for use on your own website - see here.
Eastern Australia showing ITU Zones and IOTA Reference numbers - a useful resource for the IOTA contest operator and expeditioner. The Global Overlay Mapper is currently the only map suite showing IOTA positions in such detail. Here, two IOTA entities have been plotted as icons.
A stunning view of the Relief overlay, showing the detail of Northern India and Nepal. The Relief images were generated from the GTOPO30 dataset. Individual 20° x 20° relief tiles are available for download on the MapAbility.com website.
This latest edition of the Global Overlay Mapper combines the previous Relief images with added Bathymetry, generated from the ETOPO2 dataset. Full details can be found in the Help & Information Guide.
This view shows the Time Zone overlay, and the time zones of North America. Time Zones are never as straight-forward as at first thought; the Global Overlay Mapper allows you to compare their position with every other data layer in the suite.
One of the new maps in the latest version of the Global Overlay Mapper is an Arctic map, shown on the left. Other new maps include the Atlantic and Indian Oceans, and a World map.
Here is the new world map, showing an overlay created from Nasa's spectacular 'Blue Marble' image, a composite of Land Surface, Shallow Water, and Shaded Topography. It is the most detailed true-color cloudless image of the entire Earth to date.
The comprehensive 'Find' page lets you choose a Prefix, Capital City, Country Name, Admin Area, Major City, IOTA Group, Position, Grid Locator or Callsign and have it identified with an icon. Build a group of icons and see them displayed on whichever map contains them.
Perform free callbook-lookups, courtesy of OK2CQR and HamQTH.Com. If the callbook information contains a position, you can plot the callsign on a map.
Plot each QSO in an ADIF log on the maps, with different colors for each band. Optional display of callsign text, too. Plot lists of positions or locators too.
Perhaps your ADIF or Cabrillo log has no positions? That's no problem - there's a tool to geocode the log and add a location to each QSO, as long as the call is listed in HamQTH.Com. Geocoded Cabrillo logs are converted to ADIF.

The NCDXF/IARU Beacon Network is a great resource for monitoring the bands and determining the current live propagation status. The Beacon Tool shows which beacons are operational, and when and where to listen for them. Plot beacons on a map, too.
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