Have an opportunity to c/o my H10 w/ OTA tuner to new HD recvr for free along w/ new dish as well.... Also have older SD sony tuner which operates 4 older TVs. Can I keep the older tuner on the 4 TVs with the new dish upgrade and what do I do about losing the OTA tuner on my other set ( Sony LCD w/o digital tuner, 720p ) Would this be a wise thing to do? Thanks for any input!