I have a Mitsubishi WS-55908 and a DISH 6000. I know the Mits only uses 1080i for HD. One of my local OTA stations flipped the switch on their DTV tower Monday. They are an ABC affiliate. With the 6000 in SD mode, the DT channel 28-1 and subchannel 28-2 both look great. When I run the 6000 in HD mode, 28-1 (primary channel) shows scan lines pretty bad. The picture is quite bad. Their subchannel 28-2 is fine in HD but it is a different screen format that shows only a still picture of the local radar. I was under the impression that the 6000 upconverted 720p to 1080i but unless I have something wrong, I don't believe it does. One (advanced??) DISH tech assured me today that the 6000 does not upconvert, that it only passes through to the tv set whatever type signal it receives. Non-HD and HD programming both are the same crappy clarity in HD mode on 28-1. This new DT station assured me they were not having any issues and after reading around on another small local maillist group, it sounds like other folks with, I don't know what type setups they had, were getting the station's picture just fine. I am getting an excellent signal strength so that is not an issue I get a CBS affiliate with excellent picture in any mode. I assume because it is in 1080i. The DISH rep told me that I should be able to find a converter that would convert the 720p to 1080i. Anybody know about such a critter? ($cheap$) Any other comments welcome.