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 WP4TTM-7 - show graphs
Comment: https://aprsdroid.org/
Location: 18°13.69' N 67°07.81' W - locator FK68KF44JS - show map
3.2 km North bearing 18° from Mayagüez, Mayaguez, Puerto Rico [?]
9.8 km North bearing 358° from Hormigueros, Hormigueros, Puerto Rico
104.5 km West bearing 260° from Bayamón, Bayamón, Puerto Rico
111.2 km West bearing 256° from San Juan, San Juan, Puerto Rico
Last position: 2025-09-13 17:20:55 UTC (2d 6h59m ago)
2025-09-13 13:20:55 AST local time at Mayagüez, Puerto Rico [?]
Altitude: 42 m
Course: 161°
Speed: 35 km/h
Device: Open Source: APRSdroid (app, Android)
Last path: WP4TTM-7>APDR16 via WIDE1-1,qAR,NP3AL-11 (good)
Positions stored: 1
Other SSIDs: WP4TTM-5 WP4TTM-10
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