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°40.45' N 77°14.45' W - locator FM18JQ11CT - show map - static map
5.4 miles Southwest bearing 214° from Newington, Fairfax County, Virginia, United States [?]
6.9 miles South bearing 189° from West Springfield, Fairfax County, Virginia, United States
18.8 miles Southwest bearing 216° from Washington, D. C., Washington, D.C., United States
54.3 miles Southwest bearing 219° from Baltimore, City of Baltimore, Maryland, United States
Last position: 2018-11-13 18:09:58 EST (1d 8h47m ago)
2018-11-13 18:09:58 EST local time at Newington, United States [?]
Altitude: 115 ft
Position ambiguous: Precision reduced at transmitter by 1 digits, position resolution approximately 202.3 yards.
Course: 240°
Speed: 12 MPH
Device: Kenwood: TM-D710 (rig)
Last path: KM4RFN>D8EP4Z via W4IY*,WIDE2-1,qAR,W4KEL-12 (good)
Positions stored: 4065
Stations near current position of KM4RFN - show more
callsign distance last heard - EST      callsign distance last heard - EST
N4JOG1.1 miles 175°2018-11-15 02:44:59 5021.1 miles 227°2018-11-15 02:46:37
N4CMB1.2 miles 203°2018-11-15 02:54:41 N4SZT2.1 miles 213°2018-11-06 10:50:39
W5FJN-102.4 miles 236°2018-11-10 20:26:10 W4IY2.5 miles 229°2018-11-15 02:50:02
KF2T-42.5 miles 190°2018-11-01 08:27:51 KG4URP-13.0 miles 291°2018-11-05 20:31:54
KG4URP-83.1 miles 291°2018-11-14 20:28:25 5123.3 miles 216°2018-11-15 02:42:07
Sentara3.6 miles 223°2018-11-15 02:53:07 KQ4CR3.7 miles 274°2018-10-20 19:57:56
KV4UC-93.8 miles 353°2018-11-14 17:06:17 5204.0 miles 243°2018-11-15 02:42:37
5144.0 miles 284°2018-11-15 02:48:37 N0IMB-94.3 miles 247°2018-11-11 16:34:48
FW22554.5 miles 195°2018-11-15 02:46:42 N4CMB B4.9 miles 245°2018-10-27 17:43:23
N4CMB-B4.9 miles 245°2018-10-27 17:38:38 AA4SI-95.0 miles 243°2018-11-14 20:53:14
Stations which heard KM4RFN directly on radio –
callsign pkts first heard - EST last heard longest (tx => rx) longest at - EST
N3HF-1 11 2018-11-04 11:15:17 2018-11-09 15:40:09 FM18IP > FM18GQ 6.0 miles 292° 2018-11-04 11:34:52
NV4FM-5 1 2018-11-13 17:37:33 2018-11-13 17:37:33 FM18JS > FM18JV 8.4 miles 346° 2018-11-13 17:37:33
W4IY 2 2018-11-04 11:35:53 2018-11-13 18:09:58 FM18JQ > FM18IP 2.5 miles 229° 2018-11-13 18:09:58
W4VA-10 15 2018-11-04 11:15:17 2018-11-09 15:40:09 FM18IQ > FM18BR 28.6 miles 277° 2018-11-09 12:22:23
W4KEL-12 1 2018-11-09 15:40:09 2018-11-09 15:40:09 FM18HQ > FM08QH 73.4 miles 250° 2018-11-09 15:40:09
K3HKI-1 1 2018-11-08 13:51:55 2018-11-08 13:51:55 FM18HQ > FM18QJ 42.5 miles 116° 2018-11-08 13:51:55

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