Can you use a DVR/Tivo to record without digital cable/satellite service?

Their is a few different ways to go about this. You can get Tivo and EVEN the HD Tivo can also connect to Digital and Analog channels from your OLD style roof antenna's. Or if you ONLY want to record in Standard Definition you can get the Series 2 Tivo's, they also will record OTA (Over the Air) channels. Secondly you can get GREAT TV Tuner Capture Cards (Even a few made for HD Format and make your own DVR using programs such as MythTV. Here is what the TivoHD says: "TiVo® HD combines the clarity of high definition with the smart, easy-to-use TiVo Service†. It works with any cable set-up. It connects to any home network for the best of both broadcast and broadband content. It downloads movies from the Internet to your living room. It can pause, rewind, and slow-motion with razor-sharp HD clarity. Plus, TiVo HD connects to virtually any cable service via CableCARDs1, so it replaces your existing cable box. Search for HD movies and sports. Our intelligent search features can easily find a director, actor, player, or team among broadcast or broadband content. Prefer to see a movie in high definition? Try a WishList™ search the HD version will appear in your Now Playing list. Record movies in HD. With TiVo HD, you can record shows in standard or high definition. Plus, you can pause or rewind HD instant replays without sacrificing the original razor-sharp HD resolution. Download movies from the Internet. Don't see any great movies in your cable program guide? You can easily select a classic or new release from the world's largest movie library, order them with a click of your remote control, and have them downloaded directly to your TiVo box.* Access your music library with the remote. When you connect your TiVo DVR to your home network, your HDTV can connect right to millions of songs and playlists available over the Internet. You can now enjoy digital music on the best sound system in the house. Schedule an HD premiere. With TiVo, you can do your TV scheduling from any computer when you are away from home. Log onto TiVo.com, click on a show, and you're done. Here is the Specifications link to it: http://www.tivo.com/whatistivo/tivohd/productspecifications/index.html Here are a few other ideas: http://www.dvrplayground.com/forum/thread/15974/Stand-alone-DVR-with-ATSC-tuner-/ http://www.dvrplayground.com/article/15435/A-Homebrew-How-To--Picking-the-Perfect-PC-Tuner-Card/ http://www.dvrplayground.com/article/14501/MythTV-and-TiVo-Series-3-Comparison--Battle-of-Open-Source-and-Proprietary-DVRs---Part-2/ I hope these help a bit. There are other options but hopefully I gave you a starting place. If you have any further questions please feel free to send me an email with further issues and where your at in your decision making. I wil then try to help out further..