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*
Web station KA1TW-i - show graphs
Comment: aprs.fi iOS
Location: 42°13.51' N 71°35.41' W - locator FN42EF94EA - show map
3.5 miles West bearing 266° from Hopkinton, Middlesex County, Massachusetts, United States [?]
3.5 miles North bearing 10° from Upton, Worcester County, Massachusetts, United States
28.6 miles West bearing 251° from Boston, Suffolk County, Massachusetts, United States
28.6 miles West bearing 255° from South Boston, Suffolk County, Massachusetts, United States
Last position: 2024-05-06 06:29:13 EDT (16d 17h53m ago)
2024-05-06 06:29:13 EDT local time at Hopkinton, United States [?]
Speed: 0 MPH
Last path: >aprs.fi via aprsfi-iOS
Positions stored: 8
Stations near current position of KA1TW-i - show more
callsign distance last heard - EDT      callsign distance last heard - EDT
W1OR2.5 miles 304°2024-05-21 18:32:47 KB1TDP-DP3.1 miles 332°2024-05-22 13:31:41
N1EPX-N3.2 miles 189°2024-05-21 19:31:39 W1DSR C3.6 miles 141°2024-05-23 00:14:29
W1DSR-C3.6 miles 141°2024-05-23 00:14:15 W1REH3.6 miles 288°2024-05-23 00:20:59
KB1VXY-104.1 miles 115°2024-05-13 22:03:48 EW87544.2 miles 98°2024-05-23 00:19:00
KB1MS-75.5 miles 39°2024-05-19 13:57:13 FW69405.8 miles 194°2024-05-23 00:18:50
N1EDF-96.5 miles 304°2024-05-20 08:32:20 AB2NE-96.6 miles 202°2024-05-22 11:34:54
KC1DDH-96.9 miles 67°2024-05-22 19:59:53 KC1DDH-107.1 miles 71°2024-05-11 17:10:40
DW00337.4 miles 342°2024-05-23 00:15:35 W1KU-27.8 miles 344°2024-05-22 23:40:46
NE1NH8.0 miles 240°2024-05-23 00:20:04 NM1E-78.0 miles 300°2024-05-15 14:27:26
N1IEX B8.3 miles 268°2024-05-23 00:15:55 N1IEX-B8.3 miles 268°2024-05-23 00:16:05
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