Source callsign:	PI4ADH-S
Comment:	440 Voice 431.80000MHz +0.0000MHz
Location:	52°55.75' N 4°46.85' E - locator JO22JW33QA - show map 3.7 km Southeast bearing 157° from Den Helder, Gemeente Den Helder, North Holland, Netherlands [?] 13.9 km South bearing 185° from Den Burg, Gemeente Texel, North Holland, Netherlands 62.1 km North bearing 353° from Amsterdam, Gemeente Amsterdam, North Holland, Netherlands 113.7 km North bearing 10° from Rotterdam, Gemeente Rotterdam, South Holland, Netherlands
Last position:	2025-10-13 19:27:31 UTC (10d 21h29m ago) 2025-10-13 21:27:31 CEST local time at Den Helder, Netherlands [?]
Altitude:	3 m
Last path:	PI4ADH-S>APDG01 via TCPIP*,qAC,PI4ADH-GS
Positions stored:	4

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.