Source callsign:	S51W-1
Comment:	Radiosonde tracker
Location:	46°07.70' N 13°44.85' E - locator JN66UD90QT - show map 6.2 km South bearing 170° from Tolmin, Slovenia [?] 10.9 km Southeast bearing 118° from Cras, Provincia di Udine, Friuli Venezia Giulia, Italy 59.0 km West bearing 279° from Ljubljana, Ljubljana, Slovenia 134.1 km Northeast bearing 55° from Venice, Provincia di Venezia, Veneto, Italy
Last position:	2025-11-23 19:44:41 UTC (13m14s ago) 2025-11-23 20:44:41 CET local time at Tolmin, Slovenia [?]
Last path:	S51W-1>APMI04 via TCPIP*,qAS,S51W
Positions stored:	3
Others sourced by S51W-1:	S56HKS S59DAP
Other SSIDs:	S51W-1 S51W-11 S51W-7 S51W-10 S51W-8 S51W

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.