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 [?] 14.0 km South bearing 167° from Huntingtown, Calvert 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:	2025-03-13 12:25:27 UTC (5m34s ago) 2025-03-13 08:25:27 EDT local time at Prince Frederick, United States [?]
Last path:	W3SMD>BEACON via qAR,W4NRG
Positions stored:	4
Others sourced by W3SMD:	145.230MD 145.390MD 146.640MD 146.850MD 146.895VA 147.150MD 147.195MD 147.390MD 223.90MD 441.387MD 441.637MD 441.787MD 443.050MD 443.300MD 443.600MD 443.700MD 447.075MD

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.