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 W3SJM-B - show graphs
Map loading...
Comment: 440 Voice 446.12500MHz +0.0000MHz
Location: 39°19.80' N 77°15.60' W - locator FM19IH89TE - show map - static map
2.4 miles Northeast bearing 54° from Green Valley, Frederick County, Maryland, United States [?]
4.2 miles Northwest bearing 314° from Damascus, Montgomery County, Maryland, United States
32.3 miles North bearing 338° from Washington, D. C., Washington, D.C., United States
34.7 miles West bearing 275° from Baltimore, City of Baltimore, Maryland, United States
Last position: 2017-11-19 05:30:55 EST (14m24s ago)
2017-11-19 05:30:55 EST local time at Green Valley, United States [?]
Device: Jonathan, G4KLX: ircDDB Gateway (D-Star)
Last path: W3SJM-B>APDG02 via TCPIP*,qAC,W3SJM-BS
Positions stored: 2
Packet rate: 1167 seconds between packets on average during 58368 seconds.
Other SSIDs: W3SJM-C W3SJM-R W3SJM-Y
Stations near current position of W3SJM-B - show more
callsign distance last heard - EST      callsign distance last heard - EST
W3SJM B0.0 yards 0°2017-11-19 05:30:45 W3SJM-R0.0 yards 0°2017-10-26 14:10:13
KB3CJJ-10.6 miles 180°2017-11-19 05:33:13 W3SJM-Y0.9 miles 89°2017-10-26 13:47:23
W3ICF1.5 miles 261°2017-10-21 15:50:49 KE4KMD-143.5 miles 12°2017-11-17 12:40:41
KB3CJJ3.5 miles 283°2017-11-18 17:59:12 KC3KUH-104.7 miles 280°2017-11-15 14:55:20
N3TEM-15.5 miles 56°2017-11-19 05:35:46 CW40475.9 miles 140°2017-11-19 05:42:07
EW14767.4 miles 107°2017-11-19 05:33:00 DW53588.0 miles 351°2017-11-19 05:38:34
KFDK8.6 miles 315°2017-10-29 23:30:56 K0KOC-19.2 miles 295°2017-11-19 04:51:45
K0KOC-79.2 miles 295°2017-11-12 09:18:03 NE3R-89.4 miles 336°2017-11-18 09:15:43
KM4IFK9.5 miles 283°2017-11-19 05:45:02 KV3B-19.9 miles 176°2017-11-19 05:42:34
WA3YOO-109.9 miles 164°2017-11-19 05:26:03 AB3RW-710.0 miles 286°2017-11-09 14:00:41
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