Source callsign:	W4HFH-S
Comment:	440 Voice 442.060 +5.00
Location:	38°49.36' N 77°06.33' W - ตำแหน่ง FM18KT77IK - show map 3.7 km ตะวันออกเฉียงใต้ bearing 146° มาจาก Baileys Crossroads, Fairfax County, Virginia, United States [?] 6.5 km ใต้ bearing 181° มาจาก Arlington, Arlington County, Virginia, United States 10.0 km ตะวันตกเฉียงใต้ bearing 217° มาจาก Washington, D. C., Washington, D.C., United States 67.2 km ตะวันตกเฉียงใต้ bearing 219° มาจาก Baltimore, City of Baltimore, Maryland, United States
Last position:	2025-06-06 09:00:55 UTC (6m22s ago) 2025-06-06 05:00:55 EDT เวลาท้องถิ่น Baileys Crossroads, United States [?]
Last path:	W4HFH-S>APJIO4 via TCPIP*,qAC,W4HFH-GS
Positions stored:	3
Others sourced by W4HFH-S:	W4HFH A W4HFH AD W4HFH C

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.