Location:	42°37.46' N 71°21.65' W - locator FN42HO69QU - show map 2.8 km North bearing 11° from Chelmsford, Middlesex County, Massachusetts, United States [?] 8.0 km Northeast bearing 51° from Westford, Middlesex County, Massachusetts, United States 38.5 km Northwest bearing 320° from Boston, Suffolk County, Massachusetts, United States 41.2 km Northwest bearing 322° from South Boston, Suffolk County, Massachusetts, United States
Last position:	2025-09-16 15:41:11 UTC (9d 1h37m ago) 2025-09-16 11:41:11 EDT local time at Chelmsford, United States [?]
Altitude:	49 m
Device:	Icom: IC-5100 (D-Star)
Last path:	AA1HO>API510 via DSTAR*,qAR,WB1GOF-C
Positions stored:	2208

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.