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 KM4RFN - show graphs
Map loading...
Comment: http://aprsdroid.org/
Location: 38°41.94' N 77°18.89' W - locator FM18IQ27FS - show map - static map
1.2 miles Northwest bearing 310° from Lake Ridge, Prince William County, Virginia, United States [?]
3.8 miles North bearing 343° from Potomac Mills, Prince William County, Virginia, United States
20.2 miles Southwest bearing 228° from Washington, D. C., Washington, D.C., United States
55.6 miles Southwest bearing 223° from Baltimore, City of Baltimore, Maryland, United States
Last position: 2017-01-06 19:34:45 EST (80d 9h32m ago)
2017-01-06 19:34:45 EST local time at Lake Ridge, United States [?]
Altitude: 49 ft
Course: 113°
Speed: 2 MPH
Device: Open Source: APRSdroid (app, Android)
Last path: KM4RFN>APDR13 via TCPIP*,qAC,T2CSNGRAD
Positions stored: 169
Stations near current position of KM4RFN - show more
callsign distance last heard - EDT      callsign distance last heard - EDT
KG4URP-11.4 miles 118°2017-03-28 05:59:02 KG4URP-151.4 miles 118°2017-03-25 13:58:56
KG4URP-81.4 miles 129°2017-03-27 20:56:53 W4PIO3.1 miles 179°2017-03-12 08:32:32
K4RSU3.4 miles 283°2017-03-28 05:59:53 N0CLN-93.7 miles 58°2017-03-26 13:55:08
W5FJN-53.8 miles 119°2017-03-24 23:49:04 W5FJN-93.8 miles 143°2017-03-27 18:51:00
W4IY4.0 miles 147°2017-03-28 06:02:32 AA4SI-94.1 miles 186°2017-03-26 12:49:41
KG4URW4.5 miles 123°2017-03-27 17:24:35 N4JOG-24.5 miles 129°2017-03-27 20:37:59
K4BDC-94.8 miles 160°2017-03-07 17:41:33 NY2M-74.9 miles 20°2017-03-26 13:23:21
K3MRI5.0 miles 151°2017-03-24 14:55:09 W3SR5.2 miles 155°2017-03-27 14:21:26
N3HF-15.7 miles 260°2017-03-28 06:07:24 N4AAA B5.7 miles 34°2017-03-28 05:52:10
N4AAA-B5.7 miles 34°2017-03-28 05:52:20 N4AAA5.7 miles 35°2017-03-27 17:11:07
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