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 W3IAO-4 - show graphs
Comment: 146.520MHz Jason - TH-D75A
Location: 39°34.80' N 76°50.46' W - locator FM19NN99BE - show map
2.9 km South bearing 164° from Hampstead, Carroll County, Maryland, United States [?]
9.8 km Southeast bearing 157° from Manchester, Carroll County, Maryland, United States
37.7 km Northwest bearing 329° from Baltimore, City of Baltimore, Maryland, United States
77.9 km North bearing 12° from Washington, D. C., Washington, D.C., United States
Last position: 2025-02-24 09:07:19 UTC (15d 17h25m ago)
2025-02-24 04:07:19 EST local time at Hampstead, United States [?]
Altitude: 214 m
Course: 168°
Speed: 76 km/h
Device: Open Source: APRSdroid (app, Android)
Last path: W3IAO-4>APDR16 via TCPIP*,qAC,T2ROMANIA
Positions stored: 5118
Other SSIDs: W3IAO-B W3IAO-N W3IAO-7 W3IAO-10 W3IAO-5 W3IAO-9
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