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Web station SM4WMD-4 - show graphs
Comment: aprs on iOS using Lora ESP32 as TNC
Location: 59°56.16' N 16°33.62' E - locator JO89GW74FP - show map
3.1 km Northwest bearing 305° from Sala, Sala Kommun, Västmanland, Sweden [?]
16.8 km West bearing 269° from Heby, Heby Kommun, Uppsala, Sweden
61.1 km West bearing 279° from Uppsala, Uppsala Kommun, Uppsala, Sweden
107.9 km Northwest bearing 309° from Stockholm, Stockholms Kommun, Stockholm, Sweden
Last position: 2025-07-31 10:15:19 UTC (9d 2h52m ago)
2025-07-31 12:15:19 CEST local time at Sala, Sweden [?]
Altitude: 64 m
Speed: 0 km/h
Last path: SM4WMD-4>aprs.fi via aprsfi-iOS
Positions stored: 24
Other SSIDs: SM4WMD-11 SM4WMD-10 SM4WMD-9 SM4WMD-15
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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