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SOTA Mapping Project (SMP) is a website (www.sotamaps.org) offering mapping resources for radio amateurs participating in the Summits On The Air (SOTA) awards program. It aims to provide comprehensive mapping information in graphical form based on Google Maps on summits included in the program, for participants in the program as well as for the ...
The track list or point of interest list may be in GPX, KML, NMEA or other format. Most digital cameras save the time a photo was taken. Provided the camera clock is reasonably accurate or used GPS as its time source, this time can be correlated with GPS log data, to provide an accurate location. This can be added to the Exif metadata in the ...
GPS Exchange Format (GPX) is an XML schema designed as a common GPS data format for software applications. It can be used to describe waypoints , tracks , and routes. It is an open format [ 2 ] and can be used without the need to pay license fees.
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Radio-controlled clock: NIST list of receivers [19] AC-100-WWVB Time Receiver; AC-500-MSF Time Receiver; ClockWatch Radio Sync [20] F6CTE's CLOCK [15] WWV: 2.5, 5, 10, 15, and 20 MHz AM Voice with modified IRIG-Hformat time code on 100 Hz sub-carrier (CCIR code) HF radio and antenna (plus software if automatic updating of computer time is desired)
The TTFF is commonly broken down into three more specific scenarios, as defined in the GPS equipment guide: Cold or factory The receiver is missing or has inaccurate estimates of its position, velocity, the time, or the visibility of any of the GPS satellites.
Very long-distance radio signalling is possible, using longwave techniques (low frequencies), which enables a planet-wide hyperbolic system. However, at those ranges, radio signals do not travel in straight lines, but reflect off various regions above the Earth known collectively as the ionosphere. At medium frequencies, this appears to "bend ...
A modern LF radio-controlled clock. A radio clock or radio-controlled clock (RCC), and often colloquially (and incorrectly [1]) referred to as an "atomic clock", is a type of quartz clock or watch that is automatically synchronized to a time code transmitted by a radio transmitter connected to a time standard such as an atomic clock.