Source callsign:	S51W-1
Comment:	Radiosonde tracker
Location:	46°12.50' N 13°35.85' E - locator JN66TE19QX - show map 4.3 km Northwest bearing 333° from Cras, Provincia di Udine, Friuli Venezia Giulia, Italy [?] 10.8 km West bearing 285° from Tolmin, Slovenia 72.0 km West bearing 284° from Ljubljana, Ljubljana, Slovenia 130.4 km Northeast bearing 49° from Venice, Provincia di Venezia, Veneto, Italy
Last position:	2025-11-20 20:07:18 UTC (2d 7h21m ago) 2025-11-20 21:07:18 CET local time at Cras, Italy [?]
Speed:	35 km/h
Last path:	S51W-1>APMI04 via TCPIP*,qAS,S51W
Positions stored:	6109
Others sourced by S51W-1:	S51W-14 S56HKS S59DAP
Other SSIDs:	S56GSV-7

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.