SoCal APRS Live Map
Real-time APRS packet traffic centered on the Inland Empire and San Gabriel Mountains — the backbone of SoCal's APRS infrastructure. Shows mobile stations, weather stations, digipeaters, and iGates as packets are heard.
aprs.fi's live map opens in a new tab — you'll see real-time packet traffic, mobile stations, weather stations, digipeaters, and iGates across the Inland Empire and San Gabriel Mountains.
📡 Find SoCal APRS Infrastructure
Use aprs.fi directly to see active digipeaters and iGates in your area — it shows real-time status, last-heard times, and coverage statistics for every station.
Live map filtered to digipeaters only, centered on the IE. See what's active right now, coverage areas, and path info.
View on aprs.fi →Live map of iGates feeding RF traffic into APRS-IS. Shows last-heard, range, and packet statistics for each gateway.
View on aprs.fi →Active APRS weather stations transmitting real-time temp, wind, and pressure data across SoCal.
View on aprs.fi →📋 APRS Quick Reference
The North American APRS standard frequency is 144.390 MHz FM — this is what virtually all SoCal digipeaters and iGates monitor. Some areas also run 144.340 MHz as a secondary channel.
For most SoCal mobile operation use WIDE1-1,WIDE2-1. This gives you one hop through a fill-in digi and one wide hop. Avoid WIDE2-2 or longer paths — they create unnecessary congestion on the channel.
Mobile: SmartBeaconing or ~1–2 min intervals in motion, slow to 10–30 min when parked. Fixed stations: 10–30 minutes. Avoid the temptation to beacon too fast — 144.390 is a shared channel.
APRS weather stations transmit on 144.390 MHz like any other station. Data is pulled into Weather Underground (CWOP) and aprs.fi automatically. Popular software: Peet Bros, Davis, Weather Display, WXSim.
A digipeater re-transmits packets over RF, extending range without internet. An iGate receives RF packets and forwards them to the APRS-IS internet backbone. Many stations do both. Both are critical for emergency comms.
APRS is used by ARES/RACES for real-time resource tracking during disasters. If you're activated, your position and messages appear on aprs.fi and tactical displays in real time — no phone or internet required from the field.
Live map data provided by aprs.fi — a free service by OH7LZB. Infrastructure callsigns are listed in good faith from public APRS-IS data; positions and status may change. APRS is an amateur radio service — only licensed operators may transmit.