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 W4DMM-9 - show graphs
Comment: MT-RTG-30
Mic-E message: In service
Last status: MicroTrak FA v1.42
Location: 35°58.29' N 86°31.99' W - locator EM65RX63AE - show map
1.8 km Southwest bearing 226° from Smyrna, Rutherford County, Tennessee, United States [?]
6.6 km Southeast bearing 138° from La Vergne, Rutherford County, Tennessee, United States
31.2 km Southeast bearing 134° from Nashville, Davidson County, Tennessee, United States
151.1 km Northwest bearing 313° from Chattanooga, Hamilton County, Tennessee, United States
Last position: 2025-09-18 00:43:11 UTC (18d 17h19m ago)
2025-09-17 19:43:11 CDT local time at Smyrna, United States [?]
Altitude: 202 m
Course: 319°
Speed: 52 km/h
Last telemetry: 2025-09-18 00:43:11 UTC (18d 17h19m ago) – show telemetry
Ch 1: 481, Ch 2: 637, Ch 3: 0, Ch 4: 0, Ch 5: 0
Device: Byonics: TinyTrak3 (tracker)
Last path: W4DMM-9>S5UX2Y via WIDE1-1,WIDE2-1,qAR,KM4ACK-2 (good)
Positions stored: 1339
Other SSIDs: W4DMM-3 W4DMM-7 W4DMM-i W4DMM
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