Here is some screenshots of why I love PC tuners. I have 16 tuners in my PC btw.
https://drive.google.com/open?id=0B7PjDRC3SaJxbnZxR2Y4VTlEWXM&authuser=0
https://drive.google.com/open?id=0B7PjDRC3SaJxYVZDdERKLUNMV0U&authuser=0
This is in Linux using my software, updateDVB, its 100% opensource. You can see in the background a spectrum scan, this helps you find tp much faster than blindscan (which updateDVB supports as well). Once tuned it analyzes the signal and parses everything so you can see it. It even looks for PIDS that arent assigned to anything, like in the second picture. Its a SD feed that isnt in the PMT/PAT or anywhere else. A STB will miss this every single time. every STB will.
UDL
I'm curious, what distributions of Linux will your updateDVB program run on? And is it in any of the distribution repositories, or do you install it from a DEB or RPM file or something like that, or how do you get it on your system?
I wish someone would create a specialized Linux distro just for satellite tuner users that installs from an ISO file that has been burned to a CD ROM or thumb drive, that would contain this type of software plus backend software such as TVHeadEnd, so that it would be easier to get these systems up and running. I know you can install TVHeadEnd on several different Linux distributions without too much difficulty, but none of them that I'm aware of come with any type of blindscan software such as this, and if you don't know much about Linux it seems like it would be pretty difficult to create a system with these packages from scratch.