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 NP4DG-9 - show graphs
Comment: MONITORING FREQ 146.560
Mic-E message: In service
Location: 18°02.34' N 67°07.91' W - locator FK68KA49EI - show map
6.0 km Southwest bearing 206° from Monte Grande, Cabo Rojo, Puerto Rico [?]
11.2 km South bearing 182° from Hormigueros, Hormigueros, Puerto Rico
110.5 km West bearing 249° from Bayamón, Bayamón, Puerto Rico
118.2 km Southwest bearing 246° from San Juan, San Juan, Puerto Rico
Last position: 2025-03-25 11:40:33 UTC (47d 20h4m ago)
2025-03-25 07:40:33 AST local time at Monte Grande, Puerto Rico [?]
Altitude: 37 m
Course: 158°
Speed: 9 km/h
Device: Kenwood: TM-D710 (rig)
Last path: NP4DG-9>Q8PR3T via WIDE1-1,WIDE2-1,qAR,NP3WP-1 (good)
Positions stored: 9211
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