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2. Maidenhead Locator System - Wikipedia

   en.wikipedia.org/wiki/Maidenhead_Locator_System

   The Maidenhead Locator System (a.k.a. QTH Locator and IARU Locator) is a geocode system used by amateur radio operators to succinctly describe their geographic coordinates, which replaced the deprecated QRA locator, which was limited to European contacts. [ 1] Its purpose is to be concise, accurate, and robust in the face of interference and ...

3. Geographic coordinate conversion - Wikipedia

   en.wikipedia.org/wiki/Geographic_coordinate...

   Geographic coordinate conversion has applications in cartography, surveying, navigation and geographic information systems . In geodesy, geographic coordinate conversion is defined as translation among different coordinate formats or map projections all referenced to the same geodetic datum. [ 1] A geographic coordinate transformation is a ...

4. Decimal degrees - Wikipedia

   en.wikipedia.org/wiki/Decimal_degrees

   Decimal degrees ( DD) is a notation for expressing latitude and longitude geographic coordinates as decimal fractions of a degree. DD are used in many geographic information systems (GIS), web mapping applications such as OpenStreetMap, and GPS devices. Decimal degrees are an alternative to using sexagesimal degrees (degrees, minutes, and ...

5. Geographic coordinate system - Wikipedia

   en.wikipedia.org/wiki/Geographic_coordinate_system

   v. t. e. A geographic coordinate system ( GCS) is a spherical or geodetic coordinate system for measuring and communicating positions directly on Earth as latitude and longitude. [ 1] It is the simplest, oldest and most widely used of the various spatial reference systems that are in use, and forms the basis for most others.

6. Garmin® Introduces GTX 3000 TCAS II/ACAS II-Compatible ... - AOL

   www.aol.com/news/2012-10-29-garmin-introduces...

   The GTX 3000 broadcasts on the 1090 MHz ADS-B frequency, making this an ideal solution for those business aircraft that fly at high altitudes or outside of the U.S. where it will be required to ...

7. GPS signals - Wikipedia

   en.wikipedia.org/wiki/GPS_signals

   v. t. e. GPS signals are broadcast by Global Positioning System satellites to enable satellite navigation. Receivers on or near the Earth's surface can determine location, time, and velocity using this information. The GPS satellite constellation is operated by the 2nd Space Operations Squadron (2SOPS) of Space Delta 8, United States Space Force .