i just installed my first one the other day and had to peak it off of 61.5. we were told by the local dns to use port 2(72.7), but that didn't work out at all. so i used port 3(61.5) and it got all three. it was kind of weird though, a check switch summary will only read 61.5 and 72.7. it will notice that there is something "conn" on port 1 but since 77 hasn't been activated for this part it still reads as dish mexico 77 when you select it of the signal stregnth screen. i haven't found any updates on birdog's website for a dp 61.5 or dp 72.7.