(to steven)
In my area -central Europe- I can normally receive 3 different experimental DVB-T2 muxes using FreeviewHD STB made for UK, but TBS5880 shows no signal on the same frequencies, no matter the software used, so far TBSViewer, DVB Dream, ProgDVB, MCE XP. Two of the three T2 muxes have very strong signals. The truth is, these muxes are all in testing phase, but TBS5880 doesn't detect any trace of the signal. I tried several PC systems, mainly on Win XP and only briefly Win7, and the result was the same.
Another issue - signal and quality are always mutually equal, 90% or zero, no other values!?