HI now has a D500 antenna - it is 32 inches width X 31 inches height and houses a Y-bracket slightly wider than the Y-bracket for the DPP twin LNBs used in the mainland. James Long provides a good explanation as to why a DPP twin does not work in HI; it comes down to the greater longitudinal distance between the 110 and 119 slots (compared to that distance at higher mainland latitudes) means the 110 and 119 LNBs must be further apart for a HI antenna. The HI version of D500 accommodates this extra distance by appropriately spacing two individual DP LNBs - see attached photos. This antenna has very precise leveling requirements and must be mounted to a very sturdy surface as winds are an issue, especially at higher elevations. The antenna comes with reinforcement struts (same as the ones with the Superdish). You would run the two LNBs into a DP34 (or the newer DPP33) switch to get an output equivalent to what a DP/DPP twin gives you. The approximate settings are: azimuth=096, elevation=036 and skew=029. Additionally, 129 is now viewable in HI (via spot beam) using a 24 inch dish or probably an 18 inch D300. This could fill the third slot for the DP34/DPP33. A note about 129: When I ran check switch, it came back with Even polarity only (since the only transponders associated with HI spot beam are 2, 4, 6, 14 and 16) and the System Info screen showed 129 as red status. However, the guide data still included the valid (available in HI) 129 channels so the red Sys Info indicator was erroneous. Part of the error may be that since HI does not receive the CONUS 129 beam, the receiver does not "see" anything on an odd transponder, so the Sys Info test "fails." In sum, the full HI lineup can be seen with 2 antennas, 3 DP LNBs, and the DP34 or DPP33 switch. I've occasionally seen questions posted about how to get E* in HI, hopefully this info helps.