Source callsign:	OK4AB-S
Comment:	440 Voice 438.07500MHz +0.0000MHz
Location:	49°58.35' N 14°17.27' E - locator JN79DX43MJ - show map 245.9 m West bearing 272° from Třebotov, Středočeský Kraj, Czech Republic [?] 2.7 km Northwest bearing 301° from Černošice, Středočeský Kraj, Czech Republic 16.0 km Southwest bearing 217° from Prague, Hlavní Mesto Praha, Czech Republic 126.0 km South bearing 162° from Dresden, Direktionsbezirk Dresden, Saxony, Germany
Last position:	2026-01-12 13:16:46 UTC (6d 4h25m ago) 2026-01-12 14:16:46 CET local time at Třebotov, Czech Republic [?]
Last path:	OK4AB-S>APDG01 via TCPIP*,qAC,OK4AB-GS
Positions stored:	115

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.