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 KM4PRT - show graphs
Map loading...
Comment: TX only
Location: 38°55.25' N 77°33.45' W - locator FM18FW30CX - show map - static map
7.9 miles West bearing 262° from Floris, Fairfax County, Virginia, United States [?]
8.4 miles West bearing 268° from Oak Hill, Fairfax County, Virginia, United States
28.1 miles West bearing 274° from Washington, D. C., Washington, D.C., United States
56.7 miles Southwest bearing 244° from Baltimore, City of Baltimore, Maryland, United States
Last position: 2017-01-01 14:20:02 EST (55d 6h4m ago)
2017-01-01 14:20:02 EST local time at Floris, United States [?]
Altitude: 223 ft
Device: Open Source: APRSdroid (app, Android)
Last path: KM4PRT>APDR13 via TCPIP*,qAC,AE5PL-JF
Positions stored: 2312
Other SSIDs: KM4PRT-5
Stations near current position of KM4PRT - show more
callsign distance last heard - EST      callsign distance last heard - EST
W4ABN-31.3 miles 33°2017-02-25 20:21:50 W4ABN1.3 miles 37°2017-02-11 10:11:01
K4AIU-121.8 miles 62°2017-02-23 17:34:19 KE4S-91.9 miles 69°2017-02-13 10:25:55
KD4VA4.5 miles 219°2017-02-09 10:43:27 K4MV-95.5 miles 353°2017-02-24 00:50:53
W4BRM5.7 miles 271°2017-02-25 20:18:47 W4BRM-B5.7 miles 271°2017-02-25 20:02:00
w4brm-15.7 miles 271°2017-01-30 12:56:33 W4BRM-C5.7 miles 271°2017-02-25 20:02:00
W4BRM B5.7 miles 271°2017-02-25 20:02:00 W4BRM C5.7 miles 271°2017-02-25 20:02:00
CW74535.7 miles 269°2017-02-25 20:23:41 KIAD5.8 miles 81°2017-02-22 00:29:48
DW13546.3 miles 253°2017-02-25 20:15:22 EW78406.3 miles 140°2017-02-25 20:21:52
W4YP7.0 miles 235°2017-02-25 20:01:12 N3UC7.1 miles 231°2017-02-25 20:15:17
N4LWW-57.6 miles 89°2017-02-24 05:52:45 CW37667.6 miles 134°2017-02-25 20:21:04
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