At deer camp we have a Dish 500 Twin LNB which is used for an old 2800 receiver and also for a 510 DVR. If I upgrade the 510 to a 625, will I need a different LNB? Is there one that would do both the 625 and my old 2800 receiver?
yep dpp twin. or use the 2nd tuner of your 625 to replace the 2800, and use your current installed lnb, you will have to run two lines from it to the 625.