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APRS station AB9MZ-4 - show graphs
Comment: aprs.fi for iOS
Location: 41°34.00' N 87°48.65' W - locator EN61CN26QA - show map
10.7 km Northwest bearing 311° from Matteson, Cook County, Illinois, United States [?]
12.8 km Northwest bearing 316° from Richton Park, Cook County, Illinois, United States
34.2 km Southwest bearing 203° from Chicago, Cook County, Illinois, United States
47.4 km Southeast bearing 117° from Aurora, Kane County, Illinois, United States
Last position: 2025-12-21 20:30:04 UTC (1d 2h37m ago)
2025-12-21 14:30:04 CST local time at Matteson, United States [?]
Altitude: 221 m
Device: aprs.fi: iPhone/iPad app (app, ios)
Last path: AB9MZ-4>APFII0 via W9AZ-2,WIDE1,W9AZ-1,WIDE2*,qAR,KX9A-1 (good)
Positions stored: 2
Other SSIDs: AB9MZ AB9MZ-i
Stations which heard AB9MZ-4 directly on radio –
callsign pkts first heard - UTC last heard longest (tx => rx) longest at - UTC

Only position packets which were originated by the station are shown here. The range statistics show some extra long hops, because some digipeaters do not correctly add themselves to the digipeater path. Please check the raw packets.
About this site
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.
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