Source callsign:	BI1TWJ-S
Comment:	70cm Voice (D-Star) 439.52500MHz -8.0000MHz
Location:	39°33.68' N 116°42.03' E - locator OM89IN44BR - show map 5.8 km North bearing 5° from Langfang, Hebei, China [?] 27.8 km West bearing 270° from Shuangshu, Tianjin Shi, China 46.4 km Southeast bearing 146° from Beijing, Beijing, China 62.0 km Northwest bearing 319° from Tianjin, Tianjin Shi, China
Last position:	2025-05-14 14:53:39 UTC (8d 1h21m ago) 2025-05-14 22:53:39 CST local time at Langfang, China [?]
Altitude:	3 m
Last path:	BI1TWJ-S>APDG01 via TCPIP*,qAC,BI1TWJ-GS
Positions stored:	3

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.