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APRS station AD1UP-9 - show graphs
Mic-E message: Off duty
Location: 42°37.49' N 71°21.82' W - locator FN42HO69IX - show map
2.8 km North bearing 6° from Chelmsford, Middlesex County, Massachusetts, United States [?]
4.0 km West bearing 256° from Lowell, Middlesex County, Massachusetts, United States
38.7 km Northwest bearing 320° from Boston, Suffolk County, Massachusetts, United States
41.4 km Northwest bearing 322° from South Boston, Suffolk County, Massachusetts, United States
Last position: 2024-10-24 23:55:15 UTC (139d 11h59m ago)
2024-10-24 19:55:15 EDT local time at Chelmsford, United States [?]
Altitude: 47 m
Course: 186°
Speed: 7 km/h
Device: Yaesu: FTM-400DR (rig)
Last path: AD1UP-9>TRSW4Y via WIDE1-1,WIDE2-1,qAR,WB2OSZ-5 (good)
Positions stored: 1884
About this site
This page shows real-time information collected from the Automatic Position Reporting System Internet network (APRS-IS). APRS is used by amateur (ham) radio operators to transmit real-time position information, weather data, telemetry and messages over the radio. A vehicle equipped with a GPS receiver, a VHF transmitter or HF transceiver and a small computer device called a tracker transmits it's location, speed and course in a small data packet, which is then received by a nearby iGate receiving site which forwards the packet on the Internet. Systems connected to the Internet can send information on the APRS-IS without a radio transmitter, or collect and display information transmitted anywhere in the world.
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