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 KB1DY-7 - show graphs
Map loading...
Mic-E message: Off duty
Location: 42°39.25' N 71°26.18' W - locator FN42GP77PA - show map - static map
5.1 miles Northwest bearing 317° from Chelmsford, Middlesex County, Massachusetts, United States [?]
5.2 miles North bearing 1° from Westford, Middlesex County, Massachusetts, United States
28.0 miles Northwest bearing 317° from Boston, Suffolk County, Massachusetts, United States
29.6 miles Northwest bearing 318° from South Boston, Suffolk County, Massachusetts, United States
Last position: 2017-02-22 18:55:16 EST (5d 8h7m ago)
2017-02-22 18:55:16 EST local time at Chelmsford, United States [?]
Course: 130°
Device: Kenwood: TH-D72 (ht)
Last path: KB1DY-7>TRSY2U via WIDE1-1,qAR,N3LLO-3 (good)
Positions stored: 16
Stations near current position of KB1DY-7 - show more
callsign distance last heard - EST      callsign distance last heard - EST
DW48581.7 miles 247°2017-02-28 03:02:01 N1MJL-133.0 miles 247°2017-02-28 02:58:01
N1MJL3.0 miles 247°2017-02-28 03:00:49 KC1FAC-73.2 miles 176°2017-02-12 19:23:53
CW32243.4 miles 275°2017-02-28 02:53:01 KA8SCP3.4 miles 206°2017-02-22 16:14:27
KB1SBJ C3.4 miles 207°2017-02-27 20:23:43 KB1SBJ-C3.4 miles 207°2017-02-27 20:23:28
KB1SBJ-B3.4 miles 207°2017-02-27 20:23:28 KB1SBJ B3.4 miles 207°2017-02-27 20:23:42
KC9NG3.4 miles 207°2017-02-19 11:30:11 W1WRA-13.6 miles 353°2017-02-26 12:46:29
W1WRA3.6 miles 353°2017-02-06 18:31:29 KC1AJJ-133.6 miles 113°2017-02-28 03:02:27
KZ1O-53.6 miles 342°2017-02-06 07:31:03 EW98083.8 miles 227°2017-02-28 02:49:04
CW35773.9 miles 16°2017-02-28 03:00:04 EW18984.7 miles 37°2017-02-28 02:54:58
K1ABC-94.9 miles 329°2017-02-27 14:10:58 K1ABC4.9 miles 329°2017-02-28 03:02:52
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