Hello,
I know that the following link has been already posted on 2007 but still interesting...
Here is a nice link to see the Live Traffic in the Nord-Est of Switzerland, this include also the military traffic identified by Callsigns SUIxx.
Two antennas are used for it, one in Winterthur, the other one is located in Zurich.
http://radar.zhaw.ch/radar.htmlHere is the link about This project developed by student of the EPFZ (School of Engineering in Zurich)
http://radar.zhaw.ch/