Using HDHomerun here for watching and recording OTA on all the computers and TV`s in the house.Works great!.Set it up in Windows Media Center but can be setup with sagetv,mythtv etc...Full epg.Can be had for a fraction of the cost of previously mentioned units in this thread.
I'm going to be doing this same thing in April when my new customer promos with Dish run out and my bill goes up to $72 for AT120 and 1H/1J. I will have to eat the ETF fee but I will make up the difference quickly by not paying a monthly bill.
I looked at getting one of the TiVo Roamios that have OTA. I could get that for $150 but then I would either have to pay $15 per month or pay $500 for the lifetime fee. I would also want a TiVo Mini for my bedroom and that would be another $86 plus $6 a month or $150 for the lifetime fee. I really wouldn't want to cut the cord and still be stuck with $21 a month in DVR fees so I would go lifetime and get it all out of the way at once. The problem is, that is a pretty substantial investment to watch OTA TV. It would cost me $886 to get the OTA setup I want.
Then I did a little more research and messaged yourbeliefs because I know he is using a PC for DVR purposes. I found out that I could buy one of these dual tuner HDHomeruns for $75.
http://www.amazon.com/SiliconDust-HDHomeRun-Definition-Digital-HDHR3-US/dp/B004HO58SO/ref=sr_1_1?ie=UTF8& qid=1390665673&sr=8-1&keywords=hdhomerun This one time fee would let me use Windows Media Center as my DVR for 2 recordings at once and no monthly fees. If you want more tuners you can use more than one. In that case you just have to specify which Homerun you want each timer to record from. You don't have to install any hardware on your computer either. You plug the OTA antenna into the Homerun and it sends the signal over your ethernet for any of the computers in your home to use.
I already have a HTPC that would be perfect for handling all my recording duties I have no investment cost outside of the $75 and no monthly fees. I can use a free program called Plex to stream those recordings to a Roku in my bedroom. You can also stream your recordings to smartphones, tablets, PS3, 360, and other computers in your home network and over the internet.
I'm sure that the TiVo interface is more user friendly than what I will get using WMC so that is something to consider if you aren't great with a computer. If you are confident in your PC skills it doesn't sound to complicated though. Plus my total out of pocket will be $75 instead of $886 for a TiVo setup. My only real cost will be the ETF fee to Dish.