AC3 and DD or Dolby Digital are the same , it has even had several other marketing names over the years. It is a compression technique developed by Dolby Laboratories as we all probably now. It could have up to 6 discrete digital audio channels (5.1) therefore it could easily be 2.0 only, similar to PCM but it is not PCM since it is a lossy compression technique. PCM it is the full raw bitstream after the A/D conversion or up to 48 khz digital sampling if you prefer to call it that way. DD it is a way to compress that PCM signal to make it smaller for transmission or storage.
BJ your TSReader confirms my suspicion . the first line is telling that there are only 2 digital channels , the first 2, L and R. a Full 5.1 will show 2/3 plus the LFE channel (.1). The second line is confirming there are no Dolby Surround Channels , LS and RS. and the third one is even telling that there is no LFE channel what most people wrongly call subwoofer. It remainds me recently during the Classic Bassebal Tournament , that once a gain we lost to the Japanese , this asian girls are killing me people, lol, the girls not the players of course, lol, well to the point, over here Rogers SportsNet , RSN had the exclusive rights and their audio was only 5.0 on the Ontario feed but 5.1 on the West feed even for the same game as per my Onkyo. Well I knew that issue existed since almost a year before because I subscribed to Bell TV and had RSN in my programming package , since I did not watch RSN much I did not cared and besides I also dropped that station very soon I did not complain at the time (let the native complain I thoght , besides they even have better equipment and more time tahn me probably, lol). Well during the Classic Tournament I decided to send an email to RSN to ask about it (nothing like watching the Cuban National team in full HD and glorious 5.1 audio , lol, BUT OUTSIDE OF CUBA, LOL), and guess what? apparently they had the LFE channel turned off on their RSN Ontario signal , for at least a year !!! without anyone noticing , Unbeleivable! only in Canada ! lol. I wonder if this is a similar case and the issue is: how come then PBS HD boston gets the audio full 5.1 for the same shows? I was even about to set up a UHF antenna to compare with the Buffalo PBS HD but I remember that most shows on Buffalo PBS are also 5.1 when I used to have the UHF outside until recently?. I would assume that every local PBS station gets the HD feed from this satellite downlink, right? I might send an email to PBS and to even LPB HD since they also had DD 2.0 only, will see?, lol. Unless it is indeed a CS 8100 since maybe BJ also uses a CS 8000/8100 receiver? Or is it AZBox, BJ?
Zamar23, I knew all that , that is why I said that I had the digital audio output set to DD not PCM. Makes no sense to me to have it on PCM since I have an Onkyo 605. The Onkyo 605 will light up and show PCM if it is PCM and will light up DD and also Dolby Digital 5.1 or 2.0 or even 5.0 as in the RSN story!. Beleive me , as in the RSN Story , the Onkyo never makes a mistake. What a fine receiver it is. Thanks for trying to help anyways.
About Finding DVB-S2 signals. My birdog has a SA and it sees an around 15 Mhz wide signal on 11785H, very high BTW. Anyone have any idea what it might be and more important any caracteristic differences between DVB-S and DVB-S2 when it comes to seeing the spectrum of them? I can even recognize the beacon at 11702V on the 123W bird but yet have no idea how to differentiate Analog , DVB-S, DCII or DVB-S2 signals by just looking at their spectrum.