Comment:	aprs.fi for iOS
Location:	42°35.85' N 71°09.12' W - lokaator FN42KO13SJ - show map 6.9 km Idast peiling 102° from Tewksbury, Middlesex County, Massachusetts, United States [?] 10.5 km Kirdesse peiling 66° from Billerica, Middlesex County, Massachusetts, United States 27.6 km Põhja peiling 344° from Boston, Suffolk County, Massachusetts, United States 30.5 km Põhja peiling 344° from South Boston, Suffolk County, Massachusetts, United States
Last position:	2025-08-20 13:01:18 UTC (14d 23h53m ago) 2025-08-20 09:01:18 EDT local time at Tewksbury, United States [?]
Altitude:	61 m
Speed:	0 km/h
Last path:	N1DUN-4>aprs.fi via aprsfi-iOS
Positions stored:	20
Other SSIDs:	N1DUN-9

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.