Location:	39°07.30' N 77°12.62' W - locator FM19JC49SE - show map 4.3 km West bearing 276° from Derwood, Montgomery County, Maryland, United States [?] 6.5 km Northwest bearing 310° from Rockville, Montgomery County, Maryland, United States 29.3 km Northwest bearing 329° from Washington, D. C., Washington, D.C., United States 54.8 km West bearing 250° from Baltimore, City of Baltimore, Maryland, United States
Last position:	2025-12-06 14:36:27 UTC (5m5s ago) 2025-12-06 09:36:27 EST local time at Derwood, United States [?]
Last WX report:	2025-12-06 14:36:27 UTC (5m5s ago) – show weather charts 0.6 °C 89% 1014.8 mbar 0.9 m/s Northwest
Device:	Unknown: Unknown
Last path:	DW3949>APRS via TCPXX*,qAX,CWOP-5
Positions stored:	3

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.