Location:	39°07.71' N 77°14.54' W - locator FM19JD00WU - show map 7.1 km West bearing 280° from Derwood, Montgomery County, Maryland, United States [?] 9.2 km Northwest bearing 303° from Rockville, 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:	2025-06-22 00:58:09 UTC (3d 17h55m ago) 2025-06-21 20:58:09 EDT local time at Derwood, United States [?]
Last path:	KC3TBC>API52 via DSTAR*,qAO,KV3B-B
Positions stored:	132
Other SSIDs:	KC3TBC-7 KC3TBC-B KC3TBC-i KC3TBC-N

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.