Comment:	aprs.fi for iOS
Location:	38°55.82' N 77°19.35' W - ตำแหน่ง FM18IW13HG - show map 6.9 km ตะวันออก bearing 86° มาจาก Oak Hill, Fairfax County, Virginia, United States [?] 7.8 km ตะวันออก bearing 95° มาจาก Floris, Fairfax County, Virginia, United States 25.0 km ตะวันตก bearing 279° มาจาก Washington, D. C., Washington, D.C., United States 73.2 km ตะวันตกเฉียงใต้ bearing 237° มาจาก Baltimore, City of Baltimore, Maryland, United States
Last position:	2025-01-28 01:27:22 UTC (142d 17h45m ago) 2025-01-27 20:27:22 EST เวลาท้องถิ่น Oak Hill, United States [?]
Device:	aprs.fi: iPhone/iPad app (app, ios)
Last path:	K4DUF-9>APFII0 via N4CV-2,WIDE1,N3KTX-4,NJ3T-4*,WIDE2,qAS,K3MJW-10
Positions stored:	4
Other SSIDs:	K4DUF-D K4DUF-N K4DUF-7

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.