thanks for the links, ya that's exactly my point, the Hackrf has way too much of a range to use even few antenna, so I want to make new ones for the different ranges that I am currently messing with. Too expensive and hard to find for allot of the freqs.I am definetly not an expert but I do know how much a of a difference that tuning your antenna for the freq makes on CB radios, I would love to mess with tuning for the hackrf freqs for each antenna.