Comment:	144.390MHz TOFF /A=387
Location:	38°47.80' N 77°15.06' W - ตำแหน่ง FM18IT91VE - show map 1.3 km ตะวันตกเฉียงใต้ bearing 212° มาจาก Kings Park, Fairfax County, Virginia, United States [?] 1.8 km ตะวันออก bearing 79° มาจาก Burke, Fairfax County, Virginia, United States 21.6 km ตะวันตกเฉียงใต้ bearing 240° มาจาก Washington, D. C., Washington, D.C., United States 77.8 km ตะวันตกเฉียงใต้ bearing 225° มาจาก Baltimore, City of Baltimore, Maryland, United States
Last position:	2025-08-10 19:25:56 UTC (121d 2h30m ago) 2025-08-10 15:25:56 EDT เวลาท้องถิ่น Kings Park, United States [?]
Course:	324°
ความเร็ว:	0 km/h
Last path:	W4MRA-1>BEACON via qAR,KS4E-5
Positions stored:	3
Other SSIDs:	W4MRA-9 W4MRA

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.