This time line is reconstructed from my best memory of the details for background. Long time ago, when friend changed from Dish to Directv, he had (I think) a phase 3 dish and 4 SD receivers installed (D-10's). Later his mother moved in and he asked what it would require to install another reciever. Bought him a SAM-4803 somewhere, we fished a wire, hooked up a receiver that I don't remember where it came from and all was good. Later (and this is where it gets murky, I wasn't involved), he had an HD DVR installed and his story he told me was that the tech changed the switch after installing a side car dish (he's been adamant about installing a different switch). Later, got him a H20 receiver for another room and I suppose he had acceptable service for a long time. He recently began to moan about pixelization and missing channels and finally asked me to come look at his setup. HR22 showed low levels and big splits between tuners on different HD satellite transponders and I finally looked in the attic and lo and behold, the same SAM-4803 switch was still installed. Told him since he had the protection plan, to call them and make them fix the problem. He called, handed the phone to me, I relayed the service problem details and CSR only asked to run the info and test and then scheduled a service call. I went over when the tech arrived to observe. Told tech I understood they were supposed to replace side car dishes when they are encountered. Tech insisted it was not necessary and wouldn't. Aligned dish and said he got good signals at the dish, then came inside and had not improved and I suggested he go look at the switch. Well, that was the one of the biggest problems, levels got better, although some transponders on some satellite still displayed splits of 12 or more points. He insisted it didn't matter and loaded up saying, "it passed IV" and he was gone. Questions are: 1) Could the long ago switch have passed the HD signals for quite some time okay, 2) should the dish have been replaced and 3) are splits that large acceptable even if it passes IV? Seemed to only be in a hurry to get to his next call. Thanks for your time.