Comment:	VISR3924 400
Location:	39°59.17' N 75°47.58' W - locator FM29CX46UQ - show map 1.2 km Southwest bearing 244° from Caln, Chester County, Pennsylvania, United States [?] 4.1 km West bearing 260° from Thorndale, Chester County, Pennsylvania, United States 53.7 km West bearing 274° from Philadelphia, Philadelphia County, Pennsylvania, United States 104.4 km Northeast bearing 42° from Baltimore, City of Baltimore, Maryland, United States
Last position:	2025-12-29 08:51:21 UTC (4m30s ago) 2025-12-29 03:51:21 EST local time at Caln, United States [?]
Last WX report:	2025-12-29 08:51:21 UTC (4m30s ago) – show weather charts 5.6 °C 99% 1001.2 mbar 0.9 m/s West
Device:	Unknown: Unknown
Last path:	EW3013>APRS via TCPXX*,qAX,CWOP-4
Positions stored:	1

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.