Comment:	144.640MHz 上海初中业余无线电爱好者
Location:	31°15.75' N 121°31.57' E - ตำแหน่ง PM01SG33DA - show map 680.2 m ตะวันออก bearing 85° มาจาก Yangpu, Shanghai Shi, China [?] 3.8 km ตะวันออก bearing 68° มาจาก Hongkou, Shanghai Shi, China 7.9 km ตะวันออกเฉียงเหนือ bearing 55° มาจาก Shanghai, Shanghai Shi, China 88.5 km ตะวันออก bearing 93° มาจาก Suzhou, Jiangsu Sheng, China
Last position:	2025-09-18 13:37:37 UTC (79d 21h27m ago) 2025-09-18 21:37:37 CST เวลาท้องถิ่น Yangpu, China [?]
Altitude:	80 m
Device:	Open Source: APRSdroid (app, Android)
Last path:	BI4ASC-10>APDR16 via WIDE1-1,qAS,BI4ASC-5
Positions stored:	2
Other SSIDs:	BI4ASC-5

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.