Comment:	440 Voice 431.00000MHz +0.0005MHz
Location:	37°59.37' N 121°44.20' W - locator CM97DX17OL - show map 6.4 km West bearing 291° from Knightsen, Contra Costa County, California, United States [?] 7.0 km North bearing 352° from Brentwood, Contra Costa County, California, United States 64.5 km East bearing 68° from San Francisco, San Francisco County, California, United States 73.6 km North bearing 11° from San Jose, Santa Clara County, California, United States
Last position:	2025-11-01 13:40:16 UTC (8m29s ago) 2025-11-01 06:40:16 PDT local time at Knightsen, United States [?]
Device:	Jonathan, G4KLX: ircDDB Gateway (D-Star)
Last path:	WB6DTB-B>APDG02 via TCPIP*,qAC,WB6DTB-BS
Positions stored:	1928
Other SSIDs:	WB6DTB-4

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.