Comment:	openSPOT4
Location:	39°55.67' N 75°44.01' W - ตำแหน่ง FM29DW12XQ - show map 7.3 km ใต้ bearing 172° มาจาก Thorndale, Chester County, Pennsylvania, United States [?] 9.1 km ใต้ bearing 196° มาจาก Downingtown, Chester County, Pennsylvania, United States 48.6 km ตะวันตก bearing 267° มาจาก Philadelphia, Philadelphia County, Pennsylvania, United States 103.3 km ตะวันออกเฉียงเหนือ bearing 46° มาจาก Baltimore, City of Baltimore, Maryland, United States
Last position:	2025-11-28 21:09:09 UTC (8d 16h25m ago) 2025-11-28 16:09:09 EST เวลาท้องถิ่น Thorndale, United States [?]
Device:	SharkRF: openSPOT4 (gadget)
Last path:	KD3RVR-7>APOSB4 via KD3RVR,C4FM*,qAS,KD3RVR
Positions stored:	17
Other SSIDs:	KD3RVR KD3RVR-10 KD3RVR-Y

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.