Strange callsigns, possible decoding bug?

Started by flygfantast, November 11, 2011, 04:22:10 PM

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flygfantast

Hi!

Since a week or two I have started getting a lot of strange callsigns. A single aircraft can have numerous
strange callsigns in just couple of minutes, see attached images. It only seem to happen on aircraft that
don't have ADSB. I'm using the Radarbox 24/7 and I have an external antenna and a pre-amplifier.

Is this a known bug?

Niklas
Antenna: External WiMo GP-1090 (~10m over the ground)
Pre-amplifier: AS-1090 with AS-1090BT
Cable: Ecoflex-10 (10m+1m)
Location: Motala, Sweden, 250km from ESSA & ESGG
Nearest airports: 50km from ESSL & ESCF (military)
My photos: http://www.flickr.com/photos/flygfantast/