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APRS station K4MMJ - show graphs
Comment: FTM-400D via MMDVM
Location: 38°18.06' N 77°21.39' W - ตำแหน่ง FM18HH72FF - show map
9.1 km ตะวันออก bearing 91° มาจาก Fredericksburg, City of Fredericksburg, Virginia, United States [?]
10.1 km ตะวันออก bearing 105° มาจาก Falmouth, Stafford County, Virginia, United States
71.6 km ตะวันตกเฉียงใต้ bearing 203° มาจาก Washington, D. C., Washington, D.C., United States
127.4 km ตะวันตกเฉียงใต้ bearing 211° มาจาก Baltimore, City of Baltimore, Maryland, United States
Last position: 2025-09-17 17:44:34 UTC (83d 7h8m ago)
2025-09-17 13:44:34 EDT เวลาท้องถิ่น Fredericksburg, United States [?]
ความเร็ว: 66 km/h
Device: unknown: D-Star APDPRS (D-Star)
Last path: K4MMJ>APDPRS via C4FM*,qAR,K4MMJ-R (good)
Positions stored: 22
Other SSIDs: K4MMJ-R K4MMJ-9 K4MMJ-Y K4MMJ-10 K4MMJ-N K4MMJ-D
About this site
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.
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