Location:	37°53.94' N 121°43.38' W - locator CM97DV35FS - show map 3.1 km South bearing 176° from Brentwood, Contra Costa County, California, United States [?] 8.3 km Northwest bearing 295° from Byron, Contra Costa County, California, United States 62.7 km East bearing 77° from San Francisco, San Francisco County, California, United States 64.0 km North bearing 14° from San Jose, Santa Clara County, California, United States
Last position:	2026-02-11 18:03:35 UTC (2m56s ago) 2026-02-11 10:03:35 PST local time at Brentwood, United States [?]
Last WX report:	2026-02-11 18:03:35 UTC (2m56s ago) – show weather charts 13.3 °C 85% 1013.2 mbar 1.3 m/s Southeast
Last path:	DW3588>APN000 via TCPXX*,qAX,CWOP-3
Positions stored:	11

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.