Comment:	aprs.fi for iOS
Location:	37°43.50' N 122°24.80' W - locator CM87TR04JA - show map 5.6 km South bearing 174° from San Francisco, San Francisco County, California, United States [?] 15.3 km Southwest bearing 235° from Oakland, Alameda County, California, United States 62.6 km Northwest bearing 313° from San Jose, Santa Clara County, California, United States
Last position:	2026-01-28 05:27:58 UTC (28d 4h28m ago) 2026-01-27 21:27:58 PST local time at San Francisco, United States [?]
Device:	aprs.fi: iPhone/iPad app (app, ios)
Last path:	KR6A-4>APFII0 via WIDE1-1,WIDE2-1,qAR,W6PW-10
Positions stored:	2
Other SSIDs:	KR6A-7

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.