One compact 24" dome, three satellites at once, 130-plus HD channels from DIRECTV-exactly like you enjoy at home.This is satellite TV at sea like youve never seen before! The TracVision HD7 uses KVHs revolutionary TriAD technology to receive uninterrupted broadcasts from three separate Ka- and Ku-band DIRECTV satellites simultaneously, allowing any TV or DVR onboard to receive any channel at any time, just like at home.Installation is simple with a Single-Wire Multiswitch that supports up to eight DIRECTV HD receivers or four HD DVRs using a single RF cable. Identical mounting design with TracVision 6/G6 and M7, so upgrades are a breeze. Enhanced tracking algorithms and stainless steel bearings allow the antenna to track more smoothly than earlier designs.Why do you need three satellitesUntil recently, all of DIRECTVs standard and high-definition TV programming was broadcast via satellites operating in the Ku-band (11.7-12.7 GHz). However, in a move designed to support an increased number of channels and high-capacity data broadcasts, DIRECTV moved all of its HD channels to new Ka-band satellites, which broadcast in the 18.3-18.8 GHz range. Now, DIRECTV broadcasts the majority of its HDTV channels from satellites at 99W and 103W while the original Ku-band satellite at 101W provides all of the standard definition programming PLUS the program guide for all three satellites. By tracking and receiving signals from all three satellites at once, the TracVision HD7 offers the same experience a DIRECTV customer enjoys at home.Service in Canada and the Caribbean:The primary use for the TracVision HD7 is to enjoy DIRECTV HDTV programming via the 99W, 101W, and 103W satellites. However, boaters who wish to watch programming from other DIRECTV satellites, such as the 61.5W, can use the IP ACU or iPhone App to make that switch. Likewise, it is also compatible with Bell TV (formerly ExpressVu) in Canada, allowing boaters who head north in the summer to watch Canadian programming. For boaters heading south, the TracVision HD7 is available with KVHs exclusive Tri-Americas LNB, which supports DIRECTV service in the continental United States as well as DIRECTV Latin America service in the Caribbean, Mexico, and Central and South America. This option enables boaters to switch among these different services without requiring any hardware changes.Satellite TV for everyone