Tuner's make a big difference in pulling in the signal as well. I have one of the older rca DTC-100 tuners that sucks and a newer Zenith HD-SAT520 that pulls in the stations great. These are both for use with DirecTv as well but I did install an antenna outside which they both draw from for the couple of stations that DirecTv does not offer.
I would stick with an older Zenith or Sony tuner, in fact I am sure they are basically the same unit.
I bought this antenna from Radio Shack:
http://www.radioshack.com/product/index.jsp?productId=2103088&cp=&pg=3&kw=antenna&parentPage=search
It is very directional but once you find the right spot it locks on like a mutha. I only have one tower to lock onto but if you have more than one than you would need more of these.
Good luck.
I would stick with an older Zenith or Sony tuner, in fact I am sure they are basically the same unit.
I bought this antenna from Radio Shack:
http://www.radioshack.com/product/index.jsp?productId=2103088&cp=&pg=3&kw=antenna&parentPage=search
It is very directional but once you find the right spot it locks on like a mutha. I only have one tower to lock onto but if you have more than one than you would need more of these.
Good luck.