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 4S7JL-7 - show graphs
Comment: 144.440MHz Sri lanka APRS
Location: 6°42.36' N 80°33.39' E - locator NJ06GQ69SK - show map
17.6 km East bearing 82° from Ratnapura, Sabaragamuwa, Sri Lanka [?]
21.1 km South bearing 192° from Hatton, Central, Sri Lanka
77.7 km East bearing 100° from Galkissa, Western, Sri Lanka
82.1 km East bearing 108° from Colombo, Western, Sri Lanka
Last position: 2026-02-01 07:26:15 UTC (9d 18h9m ago)
2026-02-01 12:56:15 +0530 local time at Ratnapura, Sri Lanka [?]
Altitude: 360 m
Course: 273°
Speed: 24 km/h
Device: Open Source: APRSdroid (app, Android)
Last path: 4S7JL-7>APDR16 via TCPIP*,qAC,T2SWEDEN
Positions stored: 5146
Other SSIDs: 4S7JL-4 4S7JL-11 4S7JL 4S7JL-14 4S7JL-5 4S7JL-3
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