Why are all receivers here offline?
I had to turn on my own RTLSDR R820T mini ( http://x264.nl/dump/rtlsdr_big-mini.jpg ) + the best ADS-B decoder; ADSB# ( http://sdrsharp.com/index.php/downloads ) to get reception on EHAM.
They are all offline, or do they all come from one location with directional antennas?
When I turn mine off, all planes nearly landing/taking off and on the ground are not shown.