Having a Hopper changes everything. You almost certainly have a 1000.2 dish w/EA LNB, and the outside box will almost certainly be a solo node that converts the DPP signal from the EA LNB to a triply band stacked Hopper host cable. You should in principle be able to diplex an OTA antenna on either cable coming down from the dish to the node. But (1) a few people say they haven't been able to do this, and (2) you most assuredly cannot diplex the Hopper host cable since it consumes part of the same frequencies as the Joeys.