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 KM4PHT-12 - show graphs
Comment: 147.285MHz
Mic-E message: In service
Location: 33°48.24' N 81°47.74' W - locator EM93CT42MX - show map
3.2 km South bearing 171° from Johnston, Edgefield County, South Carolina, United States [?]
12.5 km East bearing 83° from Edgefield, Edgefield County, South Carolina, United States
73.5 km West bearing 253° from Columbia, Richland County, South Carolina, United States
128.8 km Southeast bearing 155° from Greenville, Greenville County, South Carolina, United States
Last position: 2025-05-03 18:51:53 UTC (29d 13h58m ago)
2025-05-03 14:51:53 EDT local time at Johnston, United States [?]
Altitude: 243 m
Position ambiguous: Precision reduced at transmitter by 2 digits, position resolution approximately 1.9 km.
Course: 339°
Speed: 0 km/h
Device: Yaesu: FTM-300D (rig)
Last path: KM4PHT-12>S3TXLZ via WIDE1-1,WIDE2-1,qAO,WR4EC-10 (good)
Positions stored: 31
Other SSIDs: KM4PHT-9 KM4PHT-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