Great feed, thanks for setting it up, it's nice to have an enroute setup dedicated to one area only (not scanning too many frequencies) !
For those interested you can see a sector chart here (it appears to be accurate) ....
http://new.ivao.be/sites/ivaobefiles/charts/enr_misc_09.pdfFrom what I've heard so far it looks like they cross-couple the Huldenberg and Luxembourg sectors together most of the time and then when it's slow they throw in the East Low and East High sectors as well.
For those not aware of it you can watch the ADS-B traffic live on this site ....
http://www.flightradar24.com/