Comment:	73 from FM19
Location:	39°07.71' N 77°14.54' W - locator FM19JD00WU - show map 3.9 km Southwest bearing 245° from Gaithersburg, Montgomery County, Maryland, United States [?] 7.1 km West bearing 280° from Derwood, Montgomery County, Maryland, United States 31.4 km Northwest bearing 326° from Washington, D. C., Washington, D.C., United States 57.2 km West bearing 252° from Baltimore, City of Baltimore, Maryland, United States
Last position:	2025-12-24 03:36:20 UTC (1d 20h40m ago) 2025-12-23 22:36:20 EST local time at Gaithersburg, United States [?]
Altitude:	140 m
Last path:	KC3TBC-7>API52 via DSTAR*,qAR,KC3TBC-B
Positions stored:	166
Other SSIDs:	KC3TBC-B KC3TBC

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.