If you need an indoor antenna,
's recommendation of the SmarTenna+/CM-7004 combo is a good quick solution, with two caveats: 1) the CM-7004 only outputs PCM audio, so you won't get DD 5.1 with your AVR; 2) it has a recording function, but it doesn't work well at all.
Other than that, it's a pretty good tuner and indoor antenna combo while it lasts.
If you need DD 5.1, one of the MStar boxes should work. The one I use is an iVIEW 3200STB
, currently under $29 at Amazon with a (probably useless) magnetic whip antenna included. Get the box, throw away the antenna, and get a rabbit ears/UHF loop combo antenna (or however much antenna you need instead). This box will support DD 5.1 through either HDMI or coaxial digital audio connections, and the recording function is bare-bones but usable.
One of the threads
linked to mentioned the ViewTV AT-263. I have no experience with that particular one, but others have said it's OK. The ViewTV and iVIEW are very similar.