Welcome to Satellite Guys!
I had never heard of this device but it sounds interesting
what type of satellite dish do you have access to? Looks like this device might be limited to Symbol rates below 10 MS/s. If you have access to a Ku FTA dish (11.7 to 12.2 GHz), there are a few transponders worth trying:
KBS World on 123 W
Patient Channel on 87W
Canal 8 Mar Del Plata on 30W
(see Lyngsat.com for the frequencies, adjust for your LNB LO)
on C-Band, there are many more choices. An easy target with a very strong signal would be The Word network on 91W
Does this device have the capability of changing the voltage supplied to the LNB? That would be necessary if using an LNBF. Alternatively if you have access to an older-style satellite receiver with a loop-back, you could use that receiver to drive the LNBF voltage and plug your minitiouner on the loop connector (that's what I do with my SDR dongle)