That is correct. If the BBC is after, it conflicts. Before seems to work for the majority of reporting users.
Ok...what I did last night was ran an independent line from my window straight to the receiver and yup...that was exactly it...got the 400s, 9300 and 9301 last night...watched the Sopranos on A&EHD. The crappy thing is the way my house is constructed, there's no way I can have a dedicated line connected to the HR20 at all times w/o elimnating the cable feed.
Now...I have a diplexer in the attic and one in the entertainment center...let me ask you...I have 2 BBCs......theorectically...would it work if I hook one BBC before the diplexer in the attic and then another before the diplexer in the entertainment center? Does that even make sense?