I am getting a new roof installed beginning Friday. My slimline dish will be removed and reinstalled by the contractor. I have a HR34, HR24 and HR21 along with MRV. My HR34 also has a AM21 OTA tuner connected to a attic antenna. My question is: can I still watch and record shows on my OTA locals via the HR34/AM21 and antenna without the Slimline being aimed at a satellite? If not it is not a huge deal, I can still watch OTA through the TV, but my wife would still like to record a couple of her Friday shows. Also would it be better just to power down all the HR's rather then have them searching for satellite signal for a couple of days?