Roku TV antenna question

K, so i stream line Roku but i have rabbit ears for our local channels. Can anyone recommend an antenna , maybe on the roof, that might get better signals? I get four to six channels with my ears. Any help would be appreciated.

http://antennaweb.org/

http://www.tvfool.com/index.php?option=com_wrapper&Itemid=29

http://www.dennysantennaservice.com/

http://www.thehulltruth.com/dockside-chat/645606-good-hd-television-antenna.html

http://old.charlestonfishing.com/forum/topic.asp?TOPIC_ID=152163

Thanks,figured it was brought up before