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 KM4JB-B - show graphs
Map loading...
Comment: 440 Voice 438.80000MHz +0.0000MHz
Location: 39°07.67' N 77°46.56' W - locator FM19CD60VQ - show map - static map
3.3 miles West bearing 259° from Purcellville, Loudoun County, Virginia, United States [?]
6.4 miles South bearing 165° from Shannondale, Jefferson County, West Virginia, United States
42.8 miles West bearing 292° from Washington, D. C., Washington, D.C., United States
63.3 miles West bearing 260° from Baltimore, City of Baltimore, Maryland, United States
Last position: 2020-01-28 21:10:05 EST (12m48s ago)
2020-01-28 21:10:05 EST local time at Purcellville, United States [?]
Device: Jonathan, G4KLX: ircDDB Gateway (D-Star)
Last path: KM4JB-B>APDG02 via TCPIP*,qAC,KM4JB-BS
Positions stored: 6
Packet rate: 1201 seconds between packets on average during 58841 seconds.
Other SSIDs: KM4JB KM4JB-9
Stations near current position of KM4JB-B - show more
callsign distance last heard - EST      callsign distance last heard - EST
B-B0.0 yards 0°2020-01-26 02:55:49 KM4JB B0.0 yards 0°2020-01-28 21:09:55
N5EAN-71.0 miles 72°2020-01-15 17:57:05 FW12963.1 miles 93°2020-01-28 21:18:48
FW32043.8 miles 260°2020-01-28 21:15:53 K8GIS-14.0 miles 81°2020-01-26 13:16:00
DW13694.5 miles 115°2020-01-28 21:09:03 K8GIS4.5 miles 78°2020-01-28 21:21:42
CW54064.6 miles 63°2020-01-28 21:20:17 K4USS-84.7 miles 259°2020-01-28 14:30:01
WM3M B5.0 miles 54°2020-01-12 21:54:39 WM3M-B5.0 miles 54°2020-01-12 21:54:49
FW04355.6 miles 48°2020-01-28 21:15:14 DW44665.7 miles 159°2020-01-28 21:20:43
K8WDX-75.8 miles 33°2020-01-24 16:59:13 EW84406.1 miles 197°2020-01-28 21:16:54
AI4TD6.4 miles 155°2020-01-28 21:17:05 EW70836.9 miles 334°2020-01-28 21:16:04
FW40367.8 miles 105°2020-01-28 21:20:33 FW54347.8 miles 4°2020-01-28 21:15:57
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