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 WD1STC-9 - show graphs
Comment: 444.375MHz mcmullannathan425@gmail.com
Mic-E message: In service
Location: 29°56.33' N 95°22.21' W - locator EL29HW55NH - show map
1.2 km Northeast bearing 54° from Aldine, Harris County, Texas, United States [?]
12.4 km Southwest bearing 237° from Humble, Harris County, Texas, United States
19.5 km North bearing 358° from Houston, Harris County, Texas, United States
31.6 km Northwest bearing 331° from Pasadena, Harris County, Texas, United States
Last position: 2026-02-17 12:11:15 UTC (2d 19h57m ago)
2026-02-17 06:11:15 CST local time at Aldine, United States [?]
Altitude: 18 m
Course: 89°
Speed: 111 km/h
Device: Yaesu: FTM-400DR (rig)
Last path: WD1STC-9>R9UV3S via WIDE1-1,WIDE2-1,qAO,W5TMR-10 (good)
Positions stored: 1884
Other SSIDs: WD1STC-10 WD1STC-8 WD1STC-7 WD1STC-15 WD1STC WD1STC-D WD1STC-Y WD1STC-5 WD1STC-5
Stations which heard WD1STC-9 directly on radio –
callsign pkts first heard - UTC last heard longest (tx => rx) longest at - UTC

Only position packets which were originated by the station are shown here. The range statistics show some extra long hops, because some digipeaters do not correctly add themselves to the digipeater path. Please check the raw packets.
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