D11 is Ka-B-band 18.3-18.8ghz and after the LNB Ka-Lo 250-750mhz. The 103 is usually where everyone has problems passing IV because of the attenuation on longer cable runs, to many splitters, and if not peaked properly rain fade. As to the loss the dish alignment may have got him past the IV retest or it could have just slacked off on the rain??? no telling but if it was the dish alignment he didnt do it right the 1st time. Picking on someone?? lol This info comes from the people that run, design, control, whatever you want to call it at DTV so for one person to say they are all wrong is just silly to me. As for your 2 installs you saw with low signal that explains nothing there are alot of installers for DTv that as much as they are trained (although some are not) they still dont get it right it only explains they didnt do it right.