sorry for my late reply
apparently both Blscan1 & IQBlscan's results depends to "Band & step's value"
1-for large Ku-intervals it is better to use bigger values of "Band & step"(for example Band=10&Step=10) if not you will lose some transponders !!!
2-for small ku- intervals and very closes frequencies it is better to use smaller Band & step (for example Band=1&Step=1)
test made by TBS5927@26°E ;
N=100x2 Band=1 &Step=1.......... full KU-H&V
N=100x2 Band=10 &Step=10..........full KU-H&V
N=5500x12 Band=10 &Step=10.......... full KU-H&V
N=5500x12 Band=1 &Step=1.......... full KU-H
for tbs5521 I use Band=10 &Step=10 for full ku 10.7-12.75 ; this card "tbs5521"make wrong SNR values at scan (3dB,0dB,0.5dB.....!!!)
with both program IQmonitor & Crazyscan !
regards
flie