The triple dish is aimed slightly differently from the single round dish. You have to set three things: the azimuth, angle of elevation, and a "tilt" specific to oval dishes to compensate for the fact that the satellites are at different angles from your viewing position. The numbers can be obtained from D* or various other places. Your SD TV would probably have all the numbers if you set it for an oval dish. The most important factor with the oval dish is to make sure the mounting post is completely plumb. Otherwise trying to find all 3 satellites will be difficult.
With a 3 satellite oval dish you are capable of picking up the HD signals. But, you have to have an HD capable receiver to see them. An SD TiVo won't be capable of displaying the HD signals.
A forum community dedicated to home theater owners and enthusiasts. Come join the discussion about home audio/video, TVs, projectors, screens, receivers, speakers, projects, DIY’s, product reviews, accessories, classifieds, and more!