Are you sure about that?
I checked IDLB-QUDL-UNI2L-OPP.
Works flawlessly in any combination diseqc 1.0 /1.1 /1.1+1.0(cascade)
I'm quite sure.
The problem is not the LNB, the problem is the frequency converter (johansson 9645 kit).
The unicable commands enter into the device but do not exit towards the LNB.
I checked with the scope.
Bye the way, analysing with the scope I do not see the diseqc tone burst (position A/B).
Is it known, or I'm wrong?
Bye.