Source callsign:	K3DO-S
Comment:	440 Voice 441.96250MHz +5.0000MHz
Location:	39°29.68' N 77°29.92' W - ตำแหน่ง FM19GL08DR - show map 7.4 km ตะวันตกเฉียงเหนือ bearing 306° มาจาก Clover Hill, Frederick County, Maryland, United States [?] 8.5 km เหนือ bearing 3° มาจาก Braddock Heights, Frederick County, Maryland, United States 77.6 km ตะวันตกเฉียงเหนือ bearing 329° มาจาก Washington, D. C., Washington, D.C., United States 79.4 km ตะวันตก bearing 287° มาจาก Baltimore, City of Baltimore, Maryland, United States
Last position:	2025-07-13 21:26:14 UTC (3m24s ago) 2025-07-13 17:26:14 EDT เวลาท้องถิ่น Clover Hill, United States [?]
Last path:	K3DO-S>APDG01 via TCPIP*,qAC,K3DO-GS
Positions stored:	11140

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.