Source callsign:	N3TCR
Comment:	Mt. Airy Fire Department
Location:	39°22.96' N 77°08.92' W - locator FM19KJ21DU - show map 17.6 km East bearing 97° from Spring Ridge, Frederick County, Maryland, United States [?] 18.0 km East bearing 93° from Bartonsville, Frederick County, Maryland, United States 47.2 km West bearing 283° from Baltimore, City of Baltimore, Maryland, United States 55.0 km North bearing 350° from Washington, D. C., Washington, D.C., United States
Last position:	2025-12-08 01:45:57 UTC (13m21s ago) 2025-12-07 20:45:57 EST local time at Spring Ridge, United States [?]
Last path:	N3TCR>APRX29 via TCPIP*,qAS,N3TCR-10
Positions stored:	1
Others sourced by N3TCR:	PDMTAIRY

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.