yep, a lot of trial and error even when following the instructions to a T.. on top of the issue that Wilson has ZERO tech support. They will not be able to offer any guidance other than ask you what kind of wire and how long it is and then use the old mathamatical formulas of 3db per 100 feet and every fitting/junction. There answers when it is not working is always your wire is too long or something along those lines..

Not sure about Sure Call though my local supplier that dumped Wilson over support has now picked up Sure Call and he is pretty impressed with their input so far.