[ASK] LNBF cross-polarization isolation 20db vs 30db

[EdwinSebastian]

anyone can tell me different of it?

[Foxpup]

The difference is 10dB.

Oh, you mean is cross-polarisation isolation really that important in an LNBF? Usually not. At least that's what Google says, which you should have asked before posting this. All other things being equal, go with 30dB, but if other things are unequal, I guess go with whichever has the better unequal things.