Source callsign:	CT4TX
Comment:	OBRAS (Metro Mondego)
Location:	40°12.87' N 8°24.85' W - ตำแหน่ง IN50TF01HL - show map 1.1 km ตะวันออกเฉียงเหนือ bearing 25° มาจาก Coimbra, Coimbra, Coimbra, Portugal [?] 13.1 km ตะวันออกเฉียงเหนือ bearing 33° มาจาก Condeixa a Nova, Condeixa-A-Nova, Coimbra, Portugal 105.2 km ใต้ bearing 171° มาจาก Porto, Porto, Porto, Portugal
Last position:	2025-11-19 23:07:48 UTC (20d 10h54m ago) 2025-11-19 23:07:48 WET เวลาท้องถิ่น Coimbra, Portugal [?]
Last path:	CT4TX>APU25N via TCPIP*,qAC,PORTUGAL
Positions stored:	2
Others sourced by CT4TX:	DIGI01 OBRAS OBRAS-1

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.