There are a number of pitfalls in the process of aquiring a signal for an HD set. By law in the US all TVs must have a digiatl tuner. An over the air signal can produce a stunning picture. However, this depends on the local station. Some broadcast in 720p, others in
1080i. And most are still using SD for any remote feeds.Converting a 720p signal to 1080i or vise versa results in significant degradation. This can be made worse by 'professional' installers. Shortly after having purchased my HD receiver I upgraded my satellite subscription to include an HD receiver and the relatively few HD channels available at the time. The installer insisted on setting the HD receiver to output a 720p signal "because that matched the native resolution of the TV" (the TV's native resolution was
1080p). Since the HD receiver included OTA capability the idiot had set up a contition where a digital broadcast in 1080i would be converted to 702p by the receiver, then converted to 1080p by the TV with very unsatisfactory results. To further compound his folly the fool set it to display SD signals across the full width of the screen "so there wouldn't be any screen burn" - which does not occur with DLP sets.PlainBill