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 KO4W - show graphs
Map loading...
Mic-E message: Off duty
Location: 42°23.92' N 71°19.10' W - locator FN42IJ15TQ - show map - static map
2.0 miles South bearing 201° from Lincoln, Middlesex County, Massachusetts, United States [?]
4.5 miles West bearing 290° from Waltham, Middlesex County, Massachusetts, United States
13.5 miles West bearing 282° from Boston, Suffolk County, Massachusetts, United States
14.4 miles West bearing 288° from South Boston, Suffolk County, Massachusetts, United States
Last position: 2016-05-15 11:57:49 EDT (247d 3h26m ago)
2016-05-15 11:57:49 EDT local time at Lincoln, United States [?]
Altitude: 164 ft
Course: 34°
Speed: 27 MPH
Device: Yaesu: VX-8 (ht)
Last path: KO4W>TRRS9R via W1MHL*,WIDE2-1,qAR,N3LLO-3 (good)
Positions stored: 20
Stations near current position of KO4W - show more
callsign distance last heard - EST      callsign distance last heard - EST
W1EQX1.8 miles 213°2017-01-17 14:23:31 N5PZ2.8 miles 102°2017-01-17 14:22:35
KC1GSL-93.3 miles 81°2017-01-17 14:05:05 KC1GSL-73.3 miles 81°2017-01-16 09:39:05
W1MHL3.4 miles 102°2017-01-17 14:22:54 KG6EID-73.9 miles 131°2017-01-11 14:24:28
K1RBC B4.3 miles 106°2017-01-17 14:13:29 K1RBC-B4.3 miles 106°2017-01-17 14:13:39
CW46554.8 miles 107°2017-01-16 11:24:57 KA1LEO-74.8 miles 125°2017-01-15 15:31:31
CW22934.9 miles 172°2017-01-17 14:23:02 DW89454.9 miles 115°2017-01-17 14:23:53
EW87915.2 miles 200°2017-01-17 14:20:37 N1EDF-26.0 miles 185°2017-01-12 09:37:43
N1EDF6.1 miles 185°2017-01-17 14:20:14 KT1D-136.1 miles 44°2017-01-17 14:15:17
EW35656.2 miles 86°2017-01-17 14:12:05 N1EDF-106.2 miles 184°2017-01-13 11:23:57
N7FMH-126.4 miles 21°2017-01-17 14:03:03 N7FMH-106.5 miles 22°2017-01-17 12:31:21
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.
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