Station info - map view · info · telemetry · weather · raw · status · beacons · messages · bulletins · browse · moving · my account
Callsign, ship name or locator: Clear       
It is possible to search using wildcards (*?) after a prefix. Example: OH*
APRS station KC1TWQ-14 - show graphs
Comment: 146.520MHz a girl
Location: 42°32.95' N 71°32.65' W - locator FN42FN41QT - show map
4.0 km East bearing 110° from Ayer, Middlesex County, Massachusetts, United States [?]
5.7 km West bearing 274° from Littleton Common, Middlesex County, Massachusetts, United States
45.0 km Northwest bearing 298° from Boston, Suffolk County, Massachusetts, United States
47.1 km Northwest bearing 301° from South Boston, Suffolk County, Massachusetts, United States
Last position: 2026-01-08 22:31:15 UTC (1d 17h40m ago)
2026-01-08 17:31:15 EST local time at Ayer, United States [?]
Position ambiguous: Precision reduced at transmitter by 1 digits, position resolution approximately 185.0 m.
Course: 70°
Speed: 17 km/h
Device: Open Source: APRSdroid (app, Android)
Last path: KC1TWQ-14>APDR16 via TCPIP*,qAC,T2FINLAND
Positions stored: 2114
Other SSIDs: KC1TWQ-5
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.
User guide · FAQ · Blog · Discussion group · Linking to aprs.fi · AIS sites · Service status · Database statistics · Advertising on aprs.fi · Technical details · API · Change log · Planned changes · Credits and thanks · Terms Of Service · iPhone/iPad APRS