Comment:	塞北无线
Location:	40°28.53' N 115°58.95' E - locator ON70XL74VC - show map 34.9 km Northwest bearing 325° from Changping, Beijing, China [?] 60.3 km North bearing 351° from Mentougou, Beijing, China 72.3 km Northwest bearing 331° from Beijing, Beijing, China 123.3 km Northwest bearing 331° from Langfang, Hebei, China
Last position:	2025-05-31 01:34:14 UTC (49d 14h23m ago) 2025-05-31 09:34:14 CST local time at Changping, China [?]
Last path:	BH1WIL-7>APN000 via TCPIP*,qAC,T2TAIWAN
Positions stored:	23

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.