Found 17 targets:

callsign		age	comment
ECHO		3m14s	W3,NCAn/WG6D/Echo Summit
ECHO		64d 10h17m	MAASSLUIS (ETA Dec24 11:05)
ECHO		30d 13h3m	HANSWEERT
ECHO		7d 25m
ECHO		167d 5h25m	CLASS B
ECHO		96d 16h15m
ECHO		289d 10h19m
ECHO		4h1m
ECHO		9d 7h6m
ECHO		310d 14h6m
ECHO		240d 13h50m
ECHO		243d 6h51m
ECHO		158d 15h34m
ECHO		244d 9h17m	CLASS B
ECHO		138d 5h50m	CLASS B
ECHO		199d 1h54m
ECHO		57d 1h13m

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.