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 10:09:02 UTC (1m27s ago) 2025-10-13 03:09:02 PDT local time at Brentwood, United States [?]
Last WX report:	2025-10-13 10:05:03 UTC (5m26s ago) – show weather charts 15.0 °C 31% 0.0 m/s Southwest
Device:	Unknown: Unknown
Last path:	EW9135>APRS via TCPXX*,qAX,CWOP-7
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.