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APRS station W4KRL - show graphs
Comment: Home station running NA7Q aprsdroid-osm
Location: 38°50.22' N 77°28.80' W - locator FM18GU20JV - show map
4.4 km West bearing 265° from Centreville, Fairfax County, Virginia, United States [?]
5.1 km North bearing 17° from Sudley, Prince William County, Virginia, United States
38.9 km West bearing 261° from Washington, D. C., Washington, D.C., United States
90.2 km Southwest bearing 236° from Baltimore, City of Baltimore, Maryland, United States
Last position: 2025-06-07 20:15:30 UTC (11d 5h29m ago)
2025-06-07 16:15:30 EDT local time at Centreville, United States [?]
Altitude: 60 m
Course: 302°
Speed: 6 km/h
Device: Open Source: APRSdroid (app, Android)
Last path: W4KRL>APDR17 via KN4IJF-1*,WIDE1*,WIDE2-1,qAR,W4KEL-12 (good)
Positions stored: 2
Other SSIDs: W4KRL-13 W4KRL-1 W4KRL-9 W4KRL-10
APRS igate – Statistics for 2025-06:
Position packets sent to APRS-IS: 1 – show map
Stations which heard W4KRL 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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