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 K3DEF - show graphs
Comment: SharkRF openSPOT4
Location: 39°02.21' N 77°02.47' W - locator FM19LA58BU - show map
1.2 miles West bearing 263° from Kemp Mill, Montgomery County, Maryland, United States [?]
1.9 miles Northwest bearing 307° from Four Corners, Montgomery County, Maryland, United States
9.8 miles North bearing 358° from Washington, D. C., Washington, D.C., United States
28.9 miles Southwest bearing 233° from Baltimore, City of Baltimore, Maryland, United States
Last position: 2024-06-01 19:23:38 EDT (2h59m ago)
2024-06-01 19:23:38 EDT local time at Kemp Mill, United States [?]
Last path: K3DEF>APOSE via TCPIP*,qAC,T2SYDNEY
Positions stored: 1
Stations near current position of K3DEF - show more
callsign distance last heard - EDT      callsign distance last heard - EDT
W2AZG-D0.3 miles 40°2024-05-26 18:27:39 W3KIT-90.8 miles 36°2024-05-31 15:01:54
W3LDB-71.5 miles 295°2024-05-26 15:27:17 EW85521.6 miles 222°2024-06-01 22:00:16
DW94212.2 miles 168°2024-06-01 22:15:33 EW53092.3 miles 276°2024-06-01 22:19:29
Tleektown2.5 miles 241°2024-06-01 22:20:15 EW28092.5 miles 77°2024-06-01 22:20:17
N3QYJ-12.6 miles 239°2024-05-25 19:03:25 FW61652.8 miles 320°2024-06-01 22:20:47
N3QYJ-103.2 miles 243°2024-05-19 12:59:20 KE4IHG B3.4 miles 139°2024-06-01 22:20:51
KE4IHG-B3.4 miles 139°2024-06-01 22:21:01 AC3HN-N3.4 miles 139°2024-06-01 20:09:45
K4DKC3.8 miles 279°2024-05-31 12:28:59 KB3KOC3.9 miles 40°2024-05-17 17:57:25
146.955-4.2 miles 286°2024-06-01 22:19:55 LWXMWSz1A4.2 miles 140°2024-05-29 16:47:02
LWXMWSy1A4.7 miles 113°2024-05-29 16:47:02 WM3M-104.7 miles 288°2024-06-01 22:11:36
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