Location:	37°58.02' N 121°43.47' W - locator CM97DX32BB - show map 4.5 km North bearing 1° from Brentwood, Contra Costa County, California, United States [?] 5.0 km West bearing 268° from Knightsen, Contra Costa County, California, United States 64.6 km East bearing 70° from San Francisco, San Francisco County, California, United States 71.3 km North bearing 12° from San Jose, Santa Clara County, California, United States
Last position:	2025-10-13 03:47:34 UTC (5m33s ago) 2025-10-12 20:47:34 PDT local time at Brentwood, United States [?]
Last WX report:	2025-10-13 03:42:29 UTC (10m38s ago) – show weather charts 18.3 °C 19% 0.0 m/s Southwest
Device:	Unknown: Unknown
Last path:	EW9135>APRS via TCPXX*,qAX,CWOP-5
Positions stored:	1

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.