Comment:	openSPOT4
Location:	37°49.83' N 121°56.04' W - ตำแหน่ง CM97AT79WH - show map 2.2 km ตะวันออก bearing 103° มาจาก Diablo, Contra Costa County, California, United States [?] 5.9 km ตะวันออก bearing 80° มาจาก Danville, Contra Costa County, California, United States 43.1 km ตะวันออก bearing 82° มาจาก San Francisco, San Francisco County, California, United States 54.7 km เหนือ bearing 356° มาจาก San Jose, Santa Clara County, California, United States
Last position:	2025-04-18 16:01:18 UTC (81d 7h21m ago) 2025-04-18 09:01:18 PDT เวลาท้องถิ่น Diablo, United States [?]
Device:	SharkRF: openSPOT4 (gadget)
Last path:	K6JM>APOSB4 via WB5EKU,DSTAR*,qAS,WB5EKU
Positions stored:	237

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.