The long awaited Second Generation (G2) Control Boxes have finally arrived. A common misconception is that the more gain you receive, the better. This is not entirely true. You have to receive just the right amount for your conditions in order for your antenna to reach optimal capacities. In other words, the key must fit the lock. One of the biggest problems among customers is buying an antenna that is too powerful, or simply not powerful enough. This universal antenna signal range finder features an adjustable dial that allows you to control your signal strength, thereby alleviating all worries of which antenna is right for you - all can work just fine now with this control box! This universal unit has been tested and approved as compatible with outdoor antenna models such as: AX-660, AX-680, AX-903, AX-906, AX-909, 2605, 2805, and many others. Free-To-Air television (FTA), where TV should always stay free.