I have get a Terk indoor directional antenna . unfortunately I do not get the version with the build in amp , so I pick this one up after-market . I live about 30 mile from most of we local station . of the 17 available station , I probably get about ten before I add this booster . after put in the booster I get ... about ten . do not look like it make a difference one way or another . oh well . still , it be cheaper than a cable bill .