Comment:	439.800MHz https://aprsdroid.org/
Location:	31°14.95' N 121°29.27' E - ตำแหน่ง PM01RF89MT - show map 157.2 m ตะวันตกเฉียงใต้ bearing 234° มาจาก Hongkou, Shanghai Shi, China [?] 3.3 km ตะวันตกเฉียงใต้ bearing 244° มาจาก Yangpu, Shanghai Shi, China 4.1 km ตะวันออกเฉียงเหนือ bearing 43° มาจาก Shanghai, Shanghai Shi, China 85.0 km ตะวันออก bearing 94° มาจาก Suzhou, Jiangsu Sheng, China
Last position:	2025-12-05 04:35:56 UTC (4d 12h14m ago) 2025-12-05 12:35:56 CST เวลาท้องถิ่น Hongkou, China [?]
Course:	56°
ความเร็ว:	0 km/h
Device:	Open Source: APRSdroid (app, Android)
Last path:	OA2DG-5>APDR17 via TCPIP*,qAC,T2FINLAND
Positions stored:	162
Other SSIDs:	OA2DG-9 OA2DG-D OA2DG-10 OA2DG-Y OA2DG-DP oa2DG

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.