Source callsign:	W3SMD
Comment:	223.900MHz T186 R25m BarstowMD W3SMD
Location:	38°29.59' N 76°34.68' W - locator FM18RL08PI - show map 5.3 km South bearing 174° from Prince Frederick, Calvert County, Maryland, United States [?] 9.1 km East bearing 88° from Golden Beach, Saint Mary's County, Maryland, United States 59.8 km Southeast bearing 138° from Washington, D. C., Washington, D.C., United States 88.6 km South bearing 178° from Baltimore, City of Baltimore, Maryland, United States
Last position:	2026-01-25 18:05:28 UTC (14h56m ago) 2026-01-25 13:05:28 EST local time at Prince Frederick, United States [?]
Last path:	W3SMD>BEACON via qAR,W4NRG-10
Positions stored:	4

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.