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 N87EM - show graphs
Comment: KC3JYZ
Mic-E message: In service
Location: 40°02.38' N 76°01.76' W - locator FN10XA69LM - show map
5.9 km North bearing 353° from Gap, Lancaster County, Pennsylvania, United States [?]
9.8 km North bearing 344° from Christiana, Lancaster County, Pennsylvania, United States
74.3 km West bearing 278° from Philadelphia, Philadelphia County, Pennsylvania, United States
97.0 km Northeast bearing 31° from Baltimore, City of Baltimore, Maryland, United States
Last position: 2025-06-29 16:04:47 UTC (3d 3h54m ago)
2025-06-29 12:04:47 EDT local time at Gap, United States [?]
Altitude: 2110 m
Course: 317°
Speed: 274 km/h
Last telemetry: 2025-06-29 16:04:50 UTC (3d 3h54m ago) – show telemetry
Ch 1: 474, Ch 2: 613, Ch 3: 0, Ch 4: 0, Ch 5: 0
Device: Byonics: TinyTrak3 (tracker)
Last path: N87EM>T0PR3X via W3HZU-1*,HRBGPA*,WIDE2*,qAR,KB3AWQ-14 (seriously-bad)
This station appears to be flying at high altitude and using digipeaters, which causes serious congestion in the APRS network. The tracker should be configured to only use digipeaters when at low altitude.
Positions stored: 12690
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