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 K4AFN-4 - show graphs
Comment: PK
Mic-E message: In service
Location: 31°32.77' N 110°14.55' W - locator DM41VN01VB - show map
5.9 km East bearing 99° from Sierra Vista, Cochise County, Arizona, United States [?]
10.6 km North bearing 346° from Sierra Vista Southeast, Cochise County, Arizona, United States
71.4 km East bearing 68° from Heroica Nogales, Sonora, Mexico
99.0 km Southeast bearing 139° from Tucson, Pima County, Arizona, United States
Last position: 2025-02-21 23:58:03 UTC (90d 1h50m ago)
2025-02-21 16:58:03 MST local time at Sierra Vista, United States [?]
Altitude: 1363 m
Course: 61°
Speed: 0 km/h
Device: Byonics: TinyTrak4 (tracker)
Last path: K4AFN-4>S1SRWW via WIDE1-1,WIDE2-2,qAR,W7BAN (good)
Positions stored: 5922
Other SSIDs: K4AFN-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