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: WINLINK
Mic-E message: Custom 2
Location: 38°41.15' N 77°18.75' W - locator FM18IQ24MO - show map - static map
0.8 miles West bearing 260° from Lake Ridge, Prince William County, Virginia, United States [?]
2.9 miles North bearing 340° from Potomac Mills, Prince William County, Virginia, United States
20.7 miles Southwest bearing 226° from Washington, D. C., Washington, D.C., United States
56.2 miles Southwest bearing 222° from Baltimore, City of Baltimore, Maryland, United States
Last position: 2018-01-21 17:46:21 EST (2d 5h10m ago)
2018-01-21 17:46:21 EST local time at Lake Ridge, United States [?]
Altitude: 292 ft
Position ambiguous: Precision reduced at transmitter by 1 digits, position resolution approximately 202.5 yards.
Course: 359°
Speed: 16 MPH
Device: Kenwood: TM-D710 (rig)
Last path: KM4RFN>D8EQ1Z via WIDE1-1,WIDE2-1,qAR,KG4URP-1 (good)
Positions stored: 2150
Packet rate: 154 seconds between packets on average during 2000 seconds.
Stations near current position of KM4RFN - show more
callsign distance last heard - EST      callsign distance last heard - EST
KG4URP-81.1 miles 99°2018-01-23 16:50:17 KG4URP-11.1 miles 76°2018-01-23 22:46:00
KG4URO1.1 miles 76°2018-01-15 19:28:03 4URP-81.5 miles 124°2018-01-22 19:54:52
W3SR-1-i1.7 miles 287°2017-12-27 13:25:40 W3SR-12.0 miles 272°2018-01-23 14:18:27
W5FJN-92.5 miles 142°2018-01-23 19:32:51 W5FJN-102.9 miles 140°2018-01-15 09:23:45
AA4SI-93.1 miles 191°2018-01-23 13:58:08 W4IY3.2 miles 140°2018-01-23 22:51:10
K4RSU3.9 miles 295°2018-01-23 22:45:11 KN4FYR B4.3 miles 256°2018-01-22 16:44:57
KN4FYR-B4.3 miles 256°2018-01-22 16:45:07 KN4FYR C4.3 miles 256°2018-01-23 22:52:49
KN4FYR-C4.3 miles 256°2018-01-23 22:52:59 KN4FYR DP4.3 miles 256°2018-01-23 22:49:17
KN4FYR-DP4.3 miles 256°2018-01-20 10:34:05 W3VPS-74.3 miles 98°2018-01-20 22:58:57
N4OOD4.3 miles 96°2018-01-22 17:36:16 WA0DYJ-134.4 miles 151°2018-01-20 15:31:27
Stations which heard KM4RFN directly on radio –
callsign pkts first heard - EST last heard longest (tx => rx) longest at - EST
N3HF-1 13 2018-01-03 21:31:32 2018-01-21 17:41:39 FM18JS > FM18GQ 14.5 miles 244° 2018-01-03 21:35:45
KG4URP-1 21 2018-01-02 16:55:25 2018-01-21 17:46:21 FM18IQ > FM18IQ 2.2 miles 303° 2018-01-03 21:50:01
W4IY 12 2018-01-03 21:49:32 2018-01-21 17:39:21 FM18IQ > FM18IP 3.7 miles 148° 2018-01-09 18:35:47
W4KEL-12 1 2018-01-21 17:40:59 2018-01-21 17:40:59 FM18IP > FM08QH 74.3 miles 251° 2018-01-21 17:40:59
W4HFH-15 1 2018-01-03 21:38:46 2018-01-03 21:38:46 FM18JS > FM18KT 3.6 miles 52° 2018-01-03 21:38:46
K3HKI-1 4 2018-01-03 21:45:09 2018-01-21 17:39:54 FM18IP > FM18QJ 40.5 miles 116° 2018-01-21 17:39:54

Only position packets which were originated by the station are shown here. The range statistics show some extra long hops, because some digipeaters do not correctly add themselves to the digipeater path. Please check the raw packets.
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