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 AF4OZ-5 - show graphs
Location: 35°09.28' N 85°03.00' W - locator EM75LD47AC - show map
9.2 km Northeast bearing 60° from Harrison, Hamilton County, Tennessee, United States [?]
11.3 km North bearing 0° from Collegedale, Hamilton County, Tennessee, United States
26.5 km Northeast bearing 63° from Chattanooga, Hamilton County, Tennessee, United States
135.8 km Southwest bearing 229° from Knoxville, Knox County, Tennessee, United States
Last position: 2025-03-28 13:05:18 UTC (42d 2h51m ago)
2025-03-28 09:05:18 EDT local time at Harrison, United States [?]
Altitude: 209 m
Speed: 1 km/h
Device: aprs.fi: iPhone/iPad app (app, ios)
Last path: AF4OZ-5>APFII0 via WE4MB-3,WIDE1*,WIDE2-1,qAR,KG4FZR-3 (good)
Positions stored: 4
Other SSIDs: AF4OZ-Z AF4OZ-Y AF4OZ-7 AF4OZ AF4OZ-X AF4OZ-9 AF4OZ-N AF4OZ-B AF4OZ-3 AF4OZ-C
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